Update CHANGELOG.md

Author: GrahamTheCoder

CHANGELOG.md

@@ -16,7 +16,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ## [8.0.0] - 2020-03-11
 
-* Known issue: Breaks VS2017 support - please use 7.9.0 until the next version is released
+* Known issue: Breaks VS2017 support - please use [7.9.0](https://github.com/icsharpcode/CodeConverter/releases/tag/7.9.0) until the next version is released
 * Improve performance and feedback for large projects containing large files
 
 ### API
@@ -65,7 +65,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 * Avoid incorrectly renaming symbols
 * Prevent "SyntaxTree is not part of the compilation" error [#527](https://github.com/icsharpcode/CodeConverter/issues/527)
-* Avoid incorrectly renaming symbols (#524)[https://github.com/icsharpcode/CodeConverter/issues/524]
+* Avoid incorrectly renaming symbols [#524](https://github.com/icsharpcode/CodeConverter/issues/524)
 
 ## [7.8.0] - 2020-02-15