Clarify grouped console messages descriptions
Clarify grouped console messages descriptions

R=6d0eecbeb7fb9d172f49b4b32481d2466fd89429@chromium.org

Bug: 1163928
Change-Id: Id87d8caf28ccb0b621e0d8008c3110c0100d8a84
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2698846
Commit-Queue: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>
Commit-Queue: Peter Marshall <6d0eecbeb7fb9d172f49b4b32481d2466fd89429@chromium.org>
Auto-Submit: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>
Reviewed-by: Peter Marshall <6d0eecbeb7fb9d172f49b4b32481d2466fd89429@chromium.org>

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