Fix types in texture docs
Fix types in texture docs

guycalledfrank/engine,playcanvas/engine,playcanvas/engine,MicroWorldwide/PlayCanvas,aidinabedi/playcanvas-engine,sereepap2029/playcanvas,H1Gdev/engine,MicroWorldwide/PlayCanvas,guycalledfrank/engine,H1Gdev/engine,aidinabedi/playcanvas-engine,sereepap2029/playcanvas,sereepap2029/playcanvas