Add --json flag to r2 bucket info command (#24120)

Author: petebacondarwin

src/content/partials/workers/wrangler-commands/r2.mdx

@@ -42,6 +42,9 @@ wrangler r2 bucket info <NAME>
   - The name of the R2 bucket to get information about.
 - `--jurisdiction` <Type text="string" /> <MetaInfo text="optional" />
   - The jurisdiction where the bucket exists, if a jurisdiction has been specified. Refer to [jurisdictional restrictions](/r2/reference/data-location/#jurisdictional-restrictions).
+- `--json` <Type text="boolean" /> <MetaInfo text="optional" />
+  - Return output as clean JSON.
+  - Default: false
 
 <AnchorHeading title="`delete`" slug="r2-bucket-delete" depth={3} />