Update Gaia API documents for #98ba2835e796f3534d2db2e5fd57a84a878c6c4a
    Merge pull request #13238 from fcampo/exported-label-translate-929552

Bug 929552 - Footer message is not translated (r=pike,arcturus)
(cherry picked from commit 483d1f7063f714df3884bc11e680c70250a38a51)