Add missing comma

Change-Id: I2863715b1b6395c5d847b2225849c873a0b0959c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4450708
Auto-Submit: Prakhar Asthana <[email protected]>
Reviewed-by: Zhaoyang Li <[email protected]>
Commit-Queue: Zhaoyang Li <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1133015}
diff --git a/tools/code_coverage/coverage.py b/tools/code_coverage/coverage.py
index d25edf6f..095c3d3 100755
--- a/tools/code_coverage/coverage.py
+++ b/tools/code_coverage/coverage.py
@@ -975,12 +975,13 @@
       '-p',
       '--profdata-file',
       type=str,
-      action='append'
+      action='append',
       required=False,
-      help='Path(s) to profdata file(s) to use for generating code coverage reports. '
-       'This can be useful if you generated the profdata file seperately in '
-       'your own test harness. This option is ignored if run command(s) are '
-       'already provided above using -c/--command option.')
+      help=
+      'Path(s) to profdata file(s) to use for generating code coverage reports. '
+      'This can be useful if you generated the profdata file seperately in '
+      'your own test harness. This option is ignored if run command(s) are '
+      'already provided above using -c/--command option.')
 
   arg_parser.add_argument(
       '-f',