Fixed static method API docs for i18n.findAvailableLocale (#3243)
Fixed static method API docs for i18n.findAvailableLocale (#3243)

Co-authored-by: Steven Yau <0dbe529c4dfad996667815f32902cb3a2b94c94f@stevenyau.co.uk>
playcanvas/engine,MicroWorldwide/PlayCanvas,playcanvas/engine,MicroWorldwide/PlayCanvas