Merge pull request #426 from splunk/release_notes_fix

remove "yml" from playbook release notes

Author: pyth0n1c

contentctl/actions/release_notes.py

@@ -46,7 +46,7 @@ def create_notes(
                                     file_path
                                 ).replace(str(repo_path), "")
                                 playbook_link = playbook_link.replace(
-                                    ".yml", "/"
+                                    "yml", "/"
                                 ).lower()
                                 updates.append(
                                     "- "