lint: fix quoting style everywhere

BUG=chromium:990019
TEST=`cros lint` is clean & CQ passes

Change-Id: I012966d34a45a01b3a940414b24316aee4ffe8af
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/1731476
Reviewed-by: Chris McDonald <cjmcdonald@chromium.org>
Reviewed-by: Will Bradley <wbbradley@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
diff --git a/scripts/cros_uprev.py b/scripts/cros_uprev.py
index f4f51b0..a9adfb6 100644
--- a/scripts/cros_uprev.py
+++ b/scripts/cros_uprev.py
@@ -47,9 +47,9 @@
   parser.add_argument('--verbose', action='store_true',
                       help='Prints out debug info.')
   parser.add_argument('--dump-files', action='store_true',
-                      help="Dump the revved packages, new files list, and "
-                           "removed files list files. This is mostly for"
-                           "debugging right now.")
+                      help='Dump the revved packages, new files list, and '
+                           'removed files list files. This is mostly for'
+                           'debugging right now.')
 
   return parser