Shall the Ordinance, which prohibits the City of Los Altos from selling, leasing, conveying, or declaring as surplus land the ten City-owned Downtown Parking Plazas for any reason, or from authorizing new uses or physical alterations that would diminish protected trees or parking availability, access, or convenience, unless separately approved by a majority of voters, except that two Parking Plazas may be developed for affordable housing without a vote, be adopted?