Update genai/content_cache/contentcache_list.py

Co-authored-by: Holt Skinner <13262395+holtskinner@users.noreply.github.com>

Author: msampathkumar

genai/content_cache/contentcache_list.py

@@ -29,7 +29,7 @@ def list_context_caches() -> str:
         print(f"Expires at: {content_cache.expire_time}")
 
     # Example response:
-    # * Cache 'projects/111111111111/locations/us-central1/cachedContents/1111111111111111111' for
+    # * Cache `projects/111111111111/locations/us-central1/cachedContents/1111111111111111111` for
     #       model `projects/111111111111/locations/us-central1/publishers/google/models/gemini-XXX-pro-XXX`
     # * Last updated at: 2025-02-13 14:46:42.620490+00:00
     # * CachedContentUsageMetadata(audio_duration_seconds=None, image_count=167, text_count=153, total_token_count=43130, video_duration_seconds=None)