Use proper ExternalLink component for link to source code

Author: pwizla

docusaurus/docs/cms/api/client.md

@@ -409,7 +409,7 @@ The `strapi.client.files.upload()` method returns an array of file objects, each
 ```
 
 :::note Additional response fields
-The upload response includes additional fields beyond those shown above. See the complete FileResponse interface in the [client source code](https://github.com/strapi/client/blob/main/src/files/types.ts) for all available fields.
+The upload response includes additional fields beyond those shown above. See the complete FileResponse interface in the <ExternalLink to="https://github.com/strapi/client/blob/main/src/files/types.ts" text="client source code"/> for all available fields.
 :::
 
 #### `delete`