Update Gaia API documents for #c8f14ad3950d59ba13d7639eff02d080060bb3ce
    Merge pull request #14249 from RudyLu/keyboard/Bug942065-make_auto_suggestion_output_full_word

Bug 942065 - [b2g] auto suggestion uses truncated/shortend words.
r=timdream(cherry picked from commit 38bb3f608bafeda965274abfe941678197e2da2a)