chore: ignore CHANGELOG.md in CODEOWNERS (#324)

Add comment to ignore CHANGELOG markdown file

Author: iowillhoit

CODEOWNERS

@@ -1,5 +1,7 @@
 # Technical writers will be added as reviewers on markdown changes.
 *.md @salesforcecli/cli-docs
+# Attempting to ignore CHANGELOG markdown https://stackoverflow.com/a/74964396
+CHANGELOG.md
 
 # Comment line immediately above ownership line is reserved for related other information. Please be careful while editing.
-#ECCN:Open Source 5D002
+#ECCN:Open Source 5D002