docs: Tests and site broken when built from Windows

[Splaktar]

Issue reported in the forums:

Building the docs on Windows and running the docs-karma task results in the following error:

Uncaught SyntaxError: Unexpected token ILLEGAL
at http://localhost:9877/base/dist/angular-material.js?6d5eb3c7d7db6b24f4d804669dc0db8a772d2c4c:20011

This also occurs when trying to load the docs site after it was built on Windows.

[ThomasBurleson]

@Splaktar - nice work here. Thx.