Fix NoticeTag syntax

The message about sharding was not appearing because I had used the NoticeTag as a wrapping tag, which it isn't.

Author: dureuill

learn/multi_search/implement_sharding.mdx

@@ -11,9 +11,8 @@ Sharding is the process of splitting an index containing many documents into mul
 
 This guide walks you through activating the `/network` route, configuring the network object, and performing remote federated searches.
 
-<NoticeTag label="Enterprise Edition">
-Sharding is an Enterprise Edition feature. You are free to use for evaluation purposes. Please [reach out to us](mailto:[email protected]) before using it in production.
-</NoticeTag>
+<NoticeTag label="Enterprise Edition" />
+Sharding is an Enterprise Edition feature. You are free to use it for evaluation purposes. Please [reach out to us](mailto:[email protected]) before using it in production.
 
 <Tip>
 ## Configuring multiple instances