docs: fix link (#3221)

Fix legacy link

Author: Meschreiber

docs/source/schema-design/federated-schemas/sharing-types.mdx

@@ -523,7 +523,7 @@ This can be useful when different subgraphs are responsible for different subset
 
 <Note>
 
-You can also use the `enum` type across multiple subgraphs. For details, see [Merging types from multiple subgraphs](composition#enums).
+You can also use the `enum` type across multiple subgraphs. For details, see [Merging types from multiple subgraphs](/graphos/reference/federation/composition-rules#merging-types-from-multiple-subgraphs).
 
 </Note>