tweak docstrings

This fixes section names:
  Arguments -> Args
  Return -> Returns

It also fixes the last line of the docstring so it isn't cuddled.

And we fix a few docstrings that should be one line but aren't.

BUG=None
TEST=`./buildbot/run_tests` passes

Change-Id: Iaafb7d346a3aee97a40dab340463894c02533091
Reviewed-on: https://chromium-review.googlesource.com/176279
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
diff --git a/scripts/cros_extract_deps.py b/scripts/cros_extract_deps.py
index 9071a57..05cf206 100644
--- a/scripts/cros_extract_deps.py
+++ b/scripts/cros_extract_deps.py
@@ -79,8 +79,9 @@
     package: The Portage package's name, e.g. "curl"
     version: The Portage version, e.g. "7.30.0"
 
-  Returns: A list of CPE Name strings, e.g.
-           ["cpe:/a:curl:curl:7.30.0", "cpe:/a:curl:libcurl:7.30.0"]
+  Returns:
+    A list of CPE Name strings, e.g.
+    ["cpe:/a:curl:curl:7.30.0", "cpe:/a:curl:libcurl:7.30.0"]
   """
   equery_cmd = ["equery", "m", "-U", "%s/%s" % (category, package)]
   lines = cros_build_lib.RunCommand(equery_cmd, error_code_ok=True,