Fixed stupid mistakes

I do silly things sometimes, thank goodness for Travis. This probably won't be the last fix before the test passes.

Author: forresthopkinsa

git/test/test_docs.py

@@ -373,11 +373,11 @@ def test_references_and_objects(self, rw_dir):
         assert origin == empty_repo.remotes.origin == empty_repo.remotes['origin']
         origin.fetch()                  # assure we actually have data. fetch() returns useful information
         # Setup a local tracking branch of a remote branch
-        empty_repo.create_head('master', origin.refs.master) # create local branch "master" from remote branch "master"
-        empty_repo.heads.master.set_tracking_branch(origin.refs.master) # set local "master" to track remote "master
-        empty_repo.heads.master.checkout() # checkout local "master" to working tree
+        empty_repo.create_head('master', origin.refs.master)  # create local branch "master" from remote branch "master"
+        empty_repo.heads.master.set_tracking_branch(origin.refs.master)  # set local "master" to track remote "master
+        empty_repo.heads.master.checkout()  # checkout local "master" to working tree
         # Three above commands in one:
-        empty_repo.create_head('master'), origin.refs.master().set_tracking_branch(origin.refs.master).checkout()
+        empty_repo.create_head('master', origin.refs.master()).set_tracking_branch(origin.refs.master).checkout()
         # rename remotes
         origin.rename('new_origin')
         # push and pull behaves similarly to `git push|pull`