docs(guide/controllers): Just a typo

Gingerbreak would break testing. :)

Oh my gosh he's right, it totally w/ould. That is so embarrassing!

Closes #10353
docs(contributing): correct push -f command

`git push -f` needs branch specification

In all cases, please consult the git manpages before consulting angular's contributing guide
when you need help with git, thx ^^

Closes #10356
chore(changelog): add test for addition of trailing newline

Adds tests for the functionality added by #9550.

Closes #10358
docs($interval): correcting example code indentation

Bueno!

Closes #10372
docs(CHANGELOG): add v1.3.6 changes

Closes #10376
docs(CHANGELOG.md): remove the `closes ...` from 2dc34a96 notes