(docs): Adding the links to the .NET and Node.js function signatures again.

Author: dericksozo

docs/plugins/before-after.md

@@ -32,14 +32,14 @@ export type PluginBeforeEvent<T extends EventParams> = (
   eventParams: T
 ) => Promisable<T>;
 
-// Node.js version
+// Node.js [version](https://github.com/amplication/amplication/blob/master/libs/util/code-gen-types/src/plugins.types.ts#L21)
 export type PluginAfterEvent<T extends EventParams> = (
   dsgContext: DsgContext,
   eventParams: T,
   modules: ModuleMap
 ) => Promisable<ModuleMap>;
 
-// .NET version
+// .NET [version](https://github.com/amplication/amplication/blob/master/libs/util/code-gen-types/src/dotnet-plugins.types.ts#L22)
 export type PluginAfterEvent<T extends EventParams, F> = (
   dsgContext: DsgContext,
   eventParams: T,