Real property — Homeowners’ associations — Attorney’s fees — Prevailing party — Significant issues — Action seeking declaration of parties’ rights under governing documents — Trial court erred in failing to award attorney’s fees to defendant as to dismissed claim of a three-count complaint based on determination that the time expended in defense of the claim was not significant — Dismissed claim was separate and distinct, and both section 720.305 and HOA declaration contained mandatory fee provisions applicable to prevailing parties in actions to enforce governing documents