Update Gaia API documents for #a4a44f0f2a9f4bee70a6c633b791a9e1aca9ef03
    Bug 959839 - [Messages] multi-word search cannot find contacts with multi-word names

https://bugzilla.mozilla.org/show_bug.cgi?id=959839
Signed-off-by: Rick Waldron <waldron.rick@gmail.com>