docs: Remove some extraneous words from g_settings_sync() documentation
docs: Remove some extraneous words from g_settings_sync() documentation

Looks like the author started typing one thing, then changed their mind
about how to phrase the sentence, and typed something else.

Signed-off-by: Philip Withnall <3ba3974e96044dcde818e6310ed799abe10671d4@tecnocode.co.uk>

endlessm/glib,endlessm/glib,johne53/MB3Glib,johne53/MB3Glib,johne53/MB3Glib,endlessm/glib,endlessm/glib,johne53/MB3Glib,johne53/MB3Glib,endlessm/glib,johne53/MB3Glib