Add missing shebang (#2769)

build/npm/DocsPublish.js

@@ -1,3 +1,5 @@
+#!/usr/bin/env node
+
 'use strict'
 
 const path = require('path')

build/npm/Publish.js

@@ -1,3 +1,5 @@
+#!/usr/bin/env node
+
 'use strict'
 
 const path = require('path')