Update Gaia API documents for #c60631048b4dbe8e14412ff81a08c061ec8ecfb0
    Merge pull request #14501 from gitmai/bug-944718-Broken-usage-widget

Bug 944718 - [Cost Control] Broken access to usage widget from utility t...
r=salva
(cherry picked from commit 3452fbdb5e1bed0cd27cc6173136537a03e8072f)