Update injector.js

[mkolodny]

Use the spacing convention for CoffeeScript functions.
This convention is exhibited by http://coffeescript.org/ and https://github.com/polarmobile/coffeescript-style-guide#functions.

[mary-poppins]

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[IgorMinar]

I'm sorry, but I wasn't able to verify your CLA signature. CLA signature is required for any code contributions to AngularJS.

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[mkolodny]

I re-signed the CLA just in case :)