fix(help): remove match of *.run.ts files (#3982)

Author: equinox

packages/angular-cli/commands/help.ts

@@ -23,7 +23,7 @@ const HelpCommand = Command.extend({
   run: function (commandOptions: any, rawArgs: any) {
     let commandFiles = fs.readdirSync(__dirname)
       // Remove files that are not JavaScript or Typescript
-      .filter(file => file.match(/\.(j|t)s$/) && !file.match(/\.d.ts$/))
+      .filter(file => file.match(/\.(j|t)s$/) && !file.match(/\.d.ts$/) && !file.match(/\.run.ts$/))
       .map(file => path.parse(file).name)
       .map(file => file.toLowerCase());