scripts: Lint fixes.

line-too-long and docstring-section-indent fixes. Misc spelling
and grammar fixes.

BUG=None
TEST=CQ

Change-Id: If3f29b7a12425947e4fa626cf5a403229ebc2885
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/4429332
Tested-by: Alex Klein <saklein@chromium.org>
Auto-Submit: Alex Klein <saklein@chromium.org>
Reviewed-by: Cindy Lin <xcl@google.com>
Commit-Queue: Alex Klein <saklein@chromium.org>
diff --git a/scripts/autotest_quickmerge_unittest.py b/scripts/autotest_quickmerge_unittest.py
index 185a9ec..a37420f 100644
--- a/scripts/autotest_quickmerge_unittest.py
+++ b/scripts/autotest_quickmerge_unittest.py
@@ -163,7 +163,7 @@
     """Test usage of autotest_quickmerge.portage."""
 
     def testUpdatePackageContents(self):
-        """Test that UpdatePackageContents makes the correct calls to portage."""
+        """Test UpdatePackageContents makes the correct calls to portage."""
         autotest_quickmerge.portage = mock.MagicMock()
         portage = autotest_quickmerge.portage