docs(rc4-to-rc5):fix npm for angular-cli

closes #2072

Author: Yonet

public/docs/ts/latest/cookbook/rc4-to-rc5.jade

@@ -62,7 +62,7 @@ code-example(format='.' language='bash').
   Update the Angular CLI if you're using that tool
 
 code-example(format='.'  language='bash').
-  npm install @angular/angular-cli @angular/tsc-wrapped --save-dev
+  npm install angular-cli @angular/tsc-wrapped --save-dev
 
 :marked
   ## 2. Create an _NgModule_