Fix markdown links
diff --git a/README.md b/README.md
index bb259e2..1209dfc 100644
--- a/README.md
+++ b/README.md
@@ -55,7 +55,7 @@
More information can be found on the [Apache Commons Graph (Sandbox) homepage](https://commons.apache.org/sandbox/commons-graph/).
The [Javadoc](https://commons.apache.org/sandbox/commons-graph/apidocs) can be browsed.
-Questions related to the usage of Apache Commons Graph (Sandbox) should be posted to the [user mailing list][https://commons.apache.org/mail-lists.html].
+Questions related to the usage of Apache Commons Graph (Sandbox) should be posted to the [user mailing list](https://commons.apache.org/mail-lists.html).
Where can I get the latest release?
-----------------------------------
@@ -64,7 +64,7 @@
Contributing
------------
-We accept Pull Requests via GitHub. The [developer mailing list][https://commons.apache.org/mail-lists.html] is the main channel of communication for contributors.
+We accept Pull Requests via GitHub. The [developer mailing list](https://commons.apache.org/mail-lists.html) is the main channel of communication for contributors.
There are some guidelines which will make applying PRs easier for us:
+ No tabs! Please use spaces for indentation.
+ Respect the code style.
