Prepares release for Salesforce provider (#17272)

By mistake, Salesforce provider has been marked as doc-only where it
had new connection type added. This PR updates Salesforce docs preparing
it for separate release.
diff --git a/airflow/providers/salesforce/.latest-doc-only-change.txt b/airflow/providers/salesforce/.latest-doc-only-change.txt
index 526180a..b620a03 100644
--- a/airflow/providers/salesforce/.latest-doc-only-change.txt
+++ b/airflow/providers/salesforce/.latest-doc-only-change.txt
@@ -1 +1 @@
-763919d4152ffa13433e2489fec85ed286b7b196
+866a601b76e219b3c043e1dbbc8fb22300866351
diff --git a/airflow/providers/salesforce/CHANGELOG.rst b/airflow/providers/salesforce/CHANGELOG.rst
index 348c4cf..7aef596 100644
--- a/airflow/providers/salesforce/CHANGELOG.rst
+++ b/airflow/providers/salesforce/CHANGELOG.rst
@@ -19,6 +19,20 @@
 Changelog
 ---------
 
+3.1.0
+.....
+
+Features
+~~~~~~~~
+
+* ``Adding custom Salesforce connection type + SalesforceToS3Operator updates (#17162)``
+
+.. Below changes are excluded from the changelog. Move them to
+   appropriate section above if needed. Do not delete the lines(!):
+   * ``Prepares docs for Rc2 release of July providers (#17116)``
+   * ``Prepare documentation for July release of providers. (#17015)``
+   * ``Removes pylint from our toolchain (#16682)``
+
 3.0.0
 .....
 
diff --git a/airflow/providers/salesforce/provider.yaml b/airflow/providers/salesforce/provider.yaml
index 9eadab7..65d76e8 100644
--- a/airflow/providers/salesforce/provider.yaml
+++ b/airflow/providers/salesforce/provider.yaml
@@ -22,6 +22,7 @@
     `Salesforce <https://www.salesforce.com/>`__
 
 versions:
+  - 3.1.0
   - 3.0.0
   - 2.0.0
   - 1.0.1
diff --git a/docs/apache-airflow-providers-salesforce/commits.rst b/docs/apache-airflow-providers-salesforce/commits.rst
index 67d3807..b704539 100644
--- a/docs/apache-airflow-providers-salesforce/commits.rst
+++ b/docs/apache-airflow-providers-salesforce/commits.rst
@@ -28,14 +28,29 @@
 
 
 
+3.1.0
+.....
+
+Latest change: 2021-07-26
+
+================================================================================================  ===========  ======================================================================================
+Commit                                                                                            Committed    Subject
+================================================================================================  ===========  ======================================================================================
+`87f408b1e <https://github.com/apache/airflow/commit/87f408b1e78968580c760acb275ae5bb042161db>`_  2021-07-26   ``Prepares docs for Rc2 release of July providers (#17116)``
+`763919d41 <https://github.com/apache/airflow/commit/763919d4152ffa13433e2489fec85ed286b7b196>`_  2021-07-25   ``Adding custom Salesforce connection type + SalesforceToS3Operator updates (#17162)``
+`b916b7507 <https://github.com/apache/airflow/commit/b916b7507921129dc48d6add1bdc4b923b60c9b9>`_  2021-07-15   ``Prepare documentation for July release of providers. (#17015)``
+`866a601b7 <https://github.com/apache/airflow/commit/866a601b76e219b3c043e1dbbc8fb22300866351>`_  2021-06-28   ``Removes pylint from our toolchain (#16682)``
+================================================================================================  ===========  ======================================================================================
+
 3.0.0
 .....
 
-Latest change: 2021-06-16
+Latest change: 2021-06-18
 
 ================================================================================================  ===========  =================================================================
 Commit                                                                                            Committed    Subject
 ================================================================================================  ===========  =================================================================
+`bbc627a3d <https://github.com/apache/airflow/commit/bbc627a3dab17ba4cf920dd1a26dbed6f5cebfd1>`_  2021-06-18   ``Prepares documentation for rc2 release of Providers (#16501)``
 `cbf8001d7 <https://github.com/apache/airflow/commit/cbf8001d7630530773f623a786f9eb319783b33c>`_  2021-06-16   ``Synchronizes updated changelog after buggfix release (#16464)``
 `1fba5402b <https://github.com/apache/airflow/commit/1fba5402bb14b3ffa6429fdc683121935f88472f>`_  2021-06-15   ``More documentation update for June providers release (#16405)``
 `9c94b72d4 <https://github.com/apache/airflow/commit/9c94b72d440b18a9e42123d20d48b951712038f9>`_  2021-06-07   ``Updated documentation for June 2021 provider release (#16294)``
diff --git a/docs/apache-airflow-providers-salesforce/index.rst b/docs/apache-airflow-providers-salesforce/index.rst
index 7f2258d..5538dc2 100644
--- a/docs/apache-airflow-providers-salesforce/index.rst
+++ b/docs/apache-airflow-providers-salesforce/index.rst
@@ -57,7 +57,7 @@
 `Salesforce <https://www.salesforce.com/>`__
 
 
-Release: 3.0.0
+Release: 3.1.0
 
 Provider package
 ----------------
@@ -107,7 +107,7 @@
 You can download officially released packages and verify their checksums and signatures from the
 `Official Apache Download site <https://downloads.apache.org/airflow/providers/>`_
 
-* `The apache-airflow-providers-salesforce 3.0.0 sdist package <https://downloads.apache.org/airflow/providers/apache-airflow-providers-salesforce-3.0.0.tar.gz>`_ (`asc <https://downloads.apache.org/airflow/providers/apache-airflow-providers-salesforce-3.0.0.tar.gz.asc>`__, `sha512 <https://downloads.apache.org/airflow/providers/apache-airflow-providers-salesforce-3.0.0.tar.gz.sha512>`__)
-* `The apache-airflow-providers-salesforce 3.0.0 wheel package <https://downloads.apache.org/airflow/providers/apache_airflow_providers_salesforce-3.0.0-py3-none-any.whl>`_ (`asc <https://downloads.apache.org/airflow/providers/apache_airflow_providers_salesforce-3.0.0-py3-none-any.whl.asc>`__, `sha512 <https://downloads.apache.org/airflow/providers/apache_airflow_providers_salesforce-3.0.0-py3-none-any.whl.sha512>`__)
+* `The apache-airflow-providers-salesforce 3.1.0 sdist package <https://downloads.apache.org/airflow/providers/apache-airflow-providers-salesforce-3.1.0.tar.gz>`_ (`asc <https://downloads.apache.org/airflow/providers/apache-airflow-providers-salesforce-3.1.0.tar.gz.asc>`__, `sha512 <https://downloads.apache.org/airflow/providers/apache-airflow-providers-salesforce-3.1.0.tar.gz.sha512>`__)
+* `The apache-airflow-providers-salesforce 3.1.0 wheel package <https://downloads.apache.org/airflow/providers/apache_airflow_providers_salesforce-3.1.0-py3-none-any.whl>`_ (`asc <https://downloads.apache.org/airflow/providers/apache_airflow_providers_salesforce-3.1.0-py3-none-any.whl.asc>`__, `sha512 <https://downloads.apache.org/airflow/providers/apache_airflow_providers_salesforce-3.1.0-py3-none-any.whl.sha512>`__)
 
 .. include:: ../../airflow/providers/salesforce/CHANGELOG.rst