Fix markdown path exclude

Author: JoeRobich

azure-pipelines.yml

@@ -16,9 +16,10 @@ pr:
     - main
   paths:
     exclude:
-    - ./*.md 
+    - '*.md'
     - .github/*
     - azure-pipelines/release.yml
+    - CHANGELOG.
 
 # Run a scheduled build every night on main to run tests against insiders VSCode.
 # The variable testVSCodeVersion is set to insiders based on the build reason.