docs(guide/migration): fix typo

Closes #4965
docs(tutorial): minimum node.js version is 0.10 (Windows too)

The doc has been modified by the following commit: bcc6e8d4f64a18039e0ed2eee0b54c17471b43e3
But the change was not made ​​for the part of Windows.

Closes #4967
docs(ngRoute): make it easier to find the example

Closes #4975