Doc: fix build errors.
Doc: fix build errors.

vmamidi/trafficserver,duke8253/trafficserver,bryancall/trafficserver,bryancall/trafficserver,vmamidi/trafficserver,duke8253/trafficserver,vmamidi/trafficserver,pbchou/trafficserver,SolidWallOfCode/trafficserver,SolidWallOfCode/trafficserver,pbchou/trafficserver,duke8253/trafficserver,davidbz/trafficserver,pbchou/trafficserver,pbchou/trafficserver,davidbz/trafficserver,SolidWallOfCode/trafficserver,davidbz/trafficserver,pbchou/trafficserver,SolidWallOfCode/trafficserver,bryancall/trafficserver,duke8253/trafficserver,vmamidi/trafficserver,vmamidi/trafficserver,bryancall/trafficserver,davidbz/trafficserver,SolidWallOfCode/trafficserver,bryancall/trafficserver,davidbz/trafficserver,duke8253/trafficserver,davidbz/trafficserver,pbchou/trafficserver,SolidWallOfCode/trafficserver,duke8253/trafficserver,vmamidi/trafficserver,SolidWallOfCode/trafficserver,bryancall/trafficserver,duke8253/trafficserver