AN ORDINANCE AMENDING SECTION 11 OF THE ZONING PLAN EMBRACING PORTIONS OF THE DISTRICTS OF ERMITA AND MALATE, UNDER SECTION 2 OF ORDINANCE NO. 2830, OTHERWISE KNOWN AS THE ZONIFICATION ORDINANCE, AS AMENDED, BY CONVERTING THE LOTS ABUTTING VITO CRUZ ON THE SOUTH SIDE BETWEEN ROXAS BOULEVARD AND MAYTUBIG STREET, WHICH ARE AT PRESENT CLASSIFIED AS RESIDENTIAL "A" ZONE INTO COMMERCIAL ZONE.