Make link to the Icon component how-to doc public
Make link to the Icon component how-to doc public

Bug: chromium:1126031
Change-Id: I34039890d5e2dfb36cbf272673e837867e293998
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2479127
Reviewed-by: Simon Zünd <38944668e9e2ca98ccd0275b53370f90fa55c113@chromium.org>
Reviewed-by: Sigurd Schneider <f04d242e109628a27a0f75fd49a87722bcf291fd@chromium.org>
Commit-Queue: Kateryna Prokopenko <04b7d4bdbd93555cee90f085bb91b72524d21fca@google.com>

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