Fix GN doc formatting.

There were some missing newlines in the macro expansions for shared
documentation that made the action and action_foreach docs look
wrong.

clang-format also changed the way the macros are defined.

Change-Id: Id32ac1f625db86008268c1692eed970f0ae59c10
Reviewed-on: https://chromium-review.googlesource.com/1057890
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Commit-Queue: Brett Wilson <brettw@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#558749}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 443b70dbfef278f675381ca25cc9649a78211968
2 files changed
tree: 8b16ef4464071b92318d90861d07ca69555f7f29
  1. tools/