fix label on readme

Author: NullVoxPopuli

README.md

@@ -2,7 +2,7 @@
 
 [![Build Status](https://travis-ci.com/ember-codemods/ember-no-implicit-this-codemod.svg?branch=master)](https://travis-ci.com/ember-codemods/ember-no-implicit-this-codemod)
 
-[![npm](https://img.shields.io/npm/v/ember-no-implicit-this-codemod.svg?label=App)](https://www.npmjs.com/package/ember-no-implicit-this-codemod)
+[![npm](https://img.shields.io/npm/v/ember-no-implicit-this-codemod.svg?label=npm)](https://www.npmjs.com/package/ember-no-implicit-this-codemod)
 
 
 A collection of codemod's for ember-no-implicit-this-codemod.