Updated master branch to main in dev quickstart and release guides.
diff --git a/src/pages/markdown/fds-release-guide.md b/src/pages/markdown/fds-release-guide.md
index 59e133a..d6ea77c 100644
--- a/src/pages/markdown/fds-release-guide.md
+++ b/src/pages/markdown/fds-release-guide.md
@@ -65,7 +65,7 @@
     <pre>
     Reference            Example value       Description
     =========            ==============      ===========
-    ${BRANCH}            master              the development branch on which the release is based.
+    ${BRANCH}            main                the development branch on which the release is based.
     ${NIFI_FDS_VERSION}  0.1.0               the version currently in development on the release branch.
     ${NEXT_VERSION}      0.2.0-SNAPSHOT      the future version for development on the release branch.
     ${JIRA_TICKET}       NIFI-2112           the JIRA ticket created by the release manager for the release tasks.
@@ -79,7 +79,7 @@
     _To be practical but avoid confusion with future release details, these example values reflect the previous release
 NiFi Flow Design System 0.1.0 RC2 release details._
 
-NOTE: The next version should be the next minor version if the release is based on a major version development branch (e.g master
+NOTE: The next version should be the next minor version if the release is based on a major version development branch (e.g main
 or 0.x). The next version should be the next incremental version if the release is based on a minor version development branch (e.g
 support/nifi-fds-1.1.x or support/nifi-fds-0.7.4). If this is the first incremental release (e.g. 1.2.1) for a minor release line the support
 branch may need to be created.
@@ -136,7 +136,7 @@
 1. Create the next version in JIRA, if it doesn't already exist, so work can continue towards that release.
 1. Create meaningful release notes for this version if not already created.  [Enter them here][nifi-release-notes] on
 the NiFi wiki.
-1. Create a new branch off 'master' named after the JIRA ticket.
+1. Create a new branch off 'main' named after the JIRA ticket.
     ```bash
     $ git checkout -b NIFI-FDS-${JIRA_TICKET}-RC${RC} ${BRANCH}
     ```
@@ -343,11 +343,11 @@
     ```
     $ svn move -m "NIFI-FDS-${JIRA_TICKET}" https://dist.apache.org/repos/dist/dev/nifi/nifi-fds/nifi-fds-${NIFI_FDS_VERSION} https://dist.apache.org/repos/dist/release/nifi/nifi-fds/nifi-fds-${NIFI_FDS_VERSION}
     ```
-1. Merge the release branch into master.
+1. Merge the release branch into main.
     ```
-    $ git checkout master
+    $ git checkout main
     $ git merge --no-ff NIFI-FDS-${JIRA_TICKET}-RC${RC}
-    $ git push asf master
+    $ git push asf main
     ```
 
 1. Publish to the npm registry
diff --git a/src/pages/markdown/quickstart.md b/src/pages/markdown/quickstart.md
index b1d7fd5..3fdee4f 100644
--- a/src/pages/markdown/quickstart.md
+++ b/src/pages/markdown/quickstart.md
@@ -39,14 +39,14 @@
 git clone https://gitbox.apache.org/repos/asf/nifi.git
 ```
 <br/>
-Then checkout the `master` branch (which should be the default)
+Then checkout the `main` branch (which should be the default)
 
 ```
-git checkout master
+git checkout main
 ```
 
 <br/>
-The `master` branch currently represents the next major release line (1.x). Substantial work here is underway to improve the NiFi's core framework and UI. If you are interested in building the 0.x baseline to include new components and bug fixes please checkout the 0.x branch.
+The `main` branch currently represents the next major release line (1.x). Substantial work here is underway to improve the NiFi's core framework and UI. If you are interested in building the 0.x baseline to include new components and bug fixes please checkout the 0.x branch.
 <br/>
 
 ```
diff --git a/src/pages/markdown/release-guide.md b/src/pages/markdown/release-guide.md
index c96afc4..97b15ac 100644
--- a/src/pages/markdown/release-guide.md
+++ b/src/pages/markdown/release-guide.md
@@ -65,7 +65,7 @@
     <pre>
     Reference            Example value       Description
     =========            ==============      ===========
-    ${BRANCH}            master              the development branch on which the release is based.
+    ${BRANCH}            main                the development branch on which the release is based.
     ${NIFI_VERSION}      0.7.0               the version currently in development on the release branch.
     ${NEXT_VERSION}      0.8.0-SNAPSHOT      the future version for development on the release branch.
     ${JIRA_TICKET}       NIFI-2112           the JIRA ticket created by the release manager for the release tasks.
@@ -80,7 +80,7 @@
     _To be practical but avoid confusion with future release details, these example values reflect the previous release
 NiFi 0.7.0 RC2 release details._
 
-NOTE: The next version should be the next minor version if the release is based on a major version development branch (e.g master
+NOTE: The next version should be the next minor version if the release is based on a major version development branch (e.g main
 or 0.x). The next version should be the next incremental version if the release is based on a minor version development branch (e.g
 support/nifi-1.1.x or support/nifi-0.7.4). If this is the first incremental release (e.g. 1.2.1) for a minor release line the support
 branch may need to be created.
@@ -149,7 +149,7 @@
 1. Create the next version in JIRA, if it doesn't already exist, so work can continue towards that release.
 1. Create meaningful release notes for this version if not already created.  [Enter them here][nifi-release-notes] on
 the NiFi wiki.
-1. Create a new branch off 'master' named after the JIRA ticket.
+1. Create a new branch off 'main' named after the JIRA ticket.
     ```bash
     $ git checkout -b ${JIRA_TICKET}-RC${RC} ${BRANCH}
     ```
@@ -397,11 +397,11 @@
     ```
 1. In repository.apache.org go to the staging repository and select `release` and follow the instructions on the site.
 
-1. Merge the release branch into master. (this will result in a merge commit)
+1. Merge the release branch into main. (this will result in a merge commit)
     ```
-    $ git checkout master
+    $ git checkout main
     $ git merge --no-ff ${JIRA_TICKET}-RC${RC}
-    $ git push asf master
+    $ git push asf main
     ```
 
 1. Update Docker version information to point to the next release.  For instance, if the next version applied by Maven is 1.3.0-SNAPSHOT, these values should be updated to 1.3.0. This currently consists of two files:
@@ -411,7 +411,7 @@
 1. Commit and push the dockerhub module updates to the ASF repository:
     ```
     git commit -m "${JIRA_TICKET} Updated dockerhub module for next release"
-    git push asf master
+    git push asf main
     ```
 
 1. Update the NiFi website to point to the new download(s).  Remove older release artifacts from download page (leave
@@ -520,8 +520,8 @@
 [git-sign-tag-instructs]: http://gitready.com/advanced/2014/11/02/gpg-sign-releases.html
 [sonatype-maven-password]: http://blog.sonatype.com/2009/10/maven-tips-and-tricks-encrypting-passwords
 
-[dockerhub-version]: https://github.com/apache/nifi/blob/master/nifi-docker/dockerhub/Dockerfile#L24
-[dockerimage-version]: https://github.com/apache/nifi/blob/master/nifi-docker/dockerhub/DockerImage.txt#L16
+[dockerhub-version]: https://github.com/apache/nifi/blob/main/nifi-docker/dockerhub/Dockerfile#L24
+[dockerimage-version]: https://github.com/apache/nifi/blob/main/nifi-docker/dockerhub/DockerImage.txt#L16
 [docker-build]: https://hub.docker.com/r/apache/nifi
 [docker-build-status]: https://hub.docker.com/r/apache/nifi/builds/