Tweak spec description

spec/api-app-spec.js

@@ -9,7 +9,7 @@ const app = remote.require('electron').app
 const BrowserWindow = remote.require('electron').BrowserWindow
 
 describe('electron module', function () {
-  it('prevents exposing internal modules to require', function () {
+  it('does not expose internal modules to require', function () {
     assert.throws(function () {
       require('clipboard')
     }, /Cannot find module 'clipboard'/)