add release tag to widget

Signed-off-by: Kiss Miklos <miklos@roadie.io>

plugins/api-docs-module-protoc-gen-doc/api-report.md

@@ -5,8 +5,6 @@
 ```ts
 /// <reference types="react" />
 
-// Warning: (ae-missing-release-tag) "grpcDocsApiWidget" is exported by the package, but it is missing a release tag (@alpha, @beta, @public, or @internal)
-//
 // @public (undocumented)
 export const grpcDocsApiWidget: {
   type: string;

plugins/api-docs-module-protoc-gen-doc/src/widgets.tsx

@@ -17,6 +17,9 @@
 import React from 'react';
 import { GRPCSelfGeneratedAPIReference } from 'grpc-docs';
 
+/**
+ * @public
+ */
 export const grpcDocsApiWidget = {
   type: 'grpc-docs',
   title: 'gRPC',