Update docs/gcp-worker-guide.md

Co-authored-by: Jeff Hale <[email protected]>

docs/gcp-worker-guide.md

@@ -208,7 +208,7 @@ if __name__ == "__main__":
 
 In the remainder of this guide, this script will be referred to as `weather_flow.py`, but you can name yours whatever you'd like.
 
-#### Creating a Prefect.yaml file
+#### Creating a `prefect.yaml` file
 Now we're ready to make a `prefect.yaml` file, which will be responsible for managing the deployments of this repository.
 **Navigate back to the root of your directory**, and run the following command to create a `prefect.yaml` file using Prefect's docker deployment recipe.