scripts: Lint fixes.

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

BUG=None
TEST=CQ

Change-Id: I430f8c770fa60be0136220b7658b2542d68908f2
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/4416214
Tested-by: Alex Klein <saklein@chromium.org>
Commit-Queue: Jack Rosenthal <jrosenth@chromium.org>
Auto-Submit: Alex Klein <saklein@chromium.org>
Reviewed-by: Jack Rosenthal <jrosenth@chromium.org>
diff --git a/scripts/build_minios_unittest.py b/scripts/build_minios_unittest.py
index 1e0d4cc..f05de4a 100644
--- a/scripts/build_minios_unittest.py
+++ b/scripts/build_minios_unittest.py
@@ -88,7 +88,7 @@
         )
 
     def testOverridenArguments(self):
-        """Test that overridden arguments of build_minios are formatted correct."""
+        """Test overridden arguments of build_minios are formatted correctly."""
         test_board = "test-board"
         test_version = "1.0.0.0"
         test_image = "/some/image/path"