Updated prefix instructions

Author: maheshwarip

src/content/docs/pipelines/configuration/partition-filenames.mdx

@@ -15,12 +15,12 @@ For example, the output from a Pipeline in your R2 bucket might look like this:
 - event_date=2024-09-06/hr=15/37db9289-15ba-4e8b-9231-538dc7c72c1e-15.json.gz
 ```
 
-## Filepath
-Customizing the filepath allows you to store data with a specific prefix inside your specified R2 bucket. The data will remain partitioned by date.
+## Prefix
+You can specify an optional prefix for all the output files stored in your specified R2 bucket. The data will remain partitioned by date.
 
 To modify the prefix for a Pipeline using Wrangler:
 ```sh
-wrangler pipelines update <pipeline-name> --filepath "test"
+wrangler pipelines update <pipeline-name> --prefix "test"
 ```
 
 All the output records generated by your pipeline will be stored under the prefix "test", and will look like this: