Fix for expected content-type in fetch method

generateChangemarks/changemarks.py

@@ -22,7 +22,7 @@ def fetch(url : str, expected_content_type : str = None) -> requests.Response:
         logging.error(errorMessage)
         raise ValueError(errorMessage)
     if expected_content_type:
-        if r.headers['Content-Type'] != expected_content_type:
+        if not expected_content_type in r.headers['Content-Type']:
             errorMessage = f"Unexpected content type retrieving {url}. Expected {expected_content_type}, got {r.headers['Content-Type']}"
             logging.error(errorMessage)
             raise ValueError(errorMessage)