Fix bad slug

Signed-off-by: Dj Walker-Morgan <[email protected]>

Author: djw-m

advocacy_docs/edb-postgres-ai/ai-accelerator/pgfs/functions.mdx

@@ -32,7 +32,7 @@ For example, you can create a storage location with options and credentials like
 select pgfs.create_storage_location('my_storage', 's3://my_private_bucket', null, '{"region": "eu-west"}'::JSONB, '{"access_key_id": "youraccesskeyid", "secret_access_key":"yoursecretaccesskey"}'::JSONB);
 ```
 
-Once you have created a storage location, you can use it to create foreign tables and access files in the external file system. To use it with aidb, you will need to create a volume from the storage location. To do that see [creating a volume](../retrievers/usage#creating_a_new_volume) documentation.
+Once you have created a storage location, you can use it to create foreign tables and access files in the external file system. To use it with aidb, you will need to create a volume from the storage location. To do that see [creating a volume](../retrievers/usage#creating-a-new-volume) documentation.
 
 ### Listing storage locations