Adding description as an argument when creating rule for event notifications (#17641)

Author: jkoe-cf

src/content/docs/workers/wrangler/commands.mdx

@@ -938,6 +938,8 @@ wrangler r2 bucket notification create <NAME> [OPTIONS]
   - The prefix that an object must match to emit event notifications (note: regular expressions are not supported).
 - `--suffix` <Type text="string" /> <MetaInfo text="optional" />
   - The suffix that an object must match to emit event notifications (note: regular expressions are not supported).
+- `--description` <Type text="string" /> <MetaInfo text="optional" />
+  - A description that can be used to identify the event notification rule after creation.
 
 ### `notification delete`