Update the HTTP/2 docs
Update the HTTP/2 docs

vmamidi/trafficserver,pbchou/trafficserver,pbchou/trafficserver,rahmalik/trafficserver,rahmalik/trafficserver,dyrock/trafficserver,SolidWallOfCode/trafficserver,duke8253/trafficserver,davidbz/trafficserver,rpufky/trafficserver,dyrock/trafficserver,vmamidi/trafficserver,chitianhao/trafficserver,taoyunxing/trafficserver,duke8253/trafficserver,taoyunxing/trafficserver,reveller/trafficserver,reveller/trafficserver,SolidWallOfCode/trafficserver,clearswift/trafficserver,davidbz/trafficserver,rahmalik/trafficserver,chitianhao/trafficserver,clearswift/trafficserver,dyrock/trafficserver,persiaAziz/trafficserver,pbchou/trafficserver,taoyunxing/trafficserver,persiaAziz/trafficserver,PSUdaemon/trafficserver,chenglongwei/trafficserver,SolidWallOfCode/trafficserver,PSUdaemon/trafficserver,chitianhao/trafficserver,rpufky/trafficserver,clearswift/trafficserver,duke8253/trafficserver,clearswift/trafficserver,taoyunxing/trafficserver,reveller/trafficserver,SolidWallOfCode/trafficserver,davidbz/trafficserver,rpufky/trafficserver,persiaAziz/trafficserver,clearswift/trafficserver,clearswift/trafficserver,taoyunxing/trafficserver,duke8253/trafficserver,vmamidi/trafficserver,clearswift/trafficserver,chitianhao/trafficserver,rpufky/trafficserver,vmamidi/trafficserver,persiaAziz/trafficserver,davidbz/trafficserver,rahmalik/trafficserver,pbchou/trafficserver,bryancall/trafficserver,persiaAziz/trafficserver,pbchou/trafficserver,chenglongwei/trafficserver,PSUdaemon/trafficserver,rpufky/trafficserver,bryancall/trafficserver,taoyunxing/trafficserver,chenglongwei/trafficserver,chenglongwei/trafficserver,taoyunxing/trafficserver,rpufky/trafficserver,PSUdaemon/trafficserver,SolidWallOfCode/trafficserver,davidbz/trafficserver,reveller/trafficserver,chenglongwei/trafficserver,dyrock/trafficserver,chitianhao/trafficserver,PSUdaemon/trafficserver,rahmalik/trafficserver,rpufky/trafficserver,rahmalik/trafficserver,duke8253/trafficserver,chenglongwei/trafficserver,bryancall/trafficserver,PSUdaemon/trafficserver,persiaAziz/trafficserver,persiaAziz/trafficserver,duke8253/trafficserver,rpufky/trafficserver,davidbz/trafficserver,bryancall/trafficserver,rahmalik/trafficserver,dyrock/trafficserver,dyrock/trafficserver,taoyunxing/trafficserver,rpufky/trafficserver,dyrock/trafficserver,SolidWallOfCode/trafficserver,reveller/trafficserver,reveller/trafficserver,PSUdaemon/trafficserver,pbchou/trafficserver,chenglongwei/trafficserver,reveller/trafficserver,persiaAziz/trafficserver,vmamidi/trafficserver,duke8253/trafficserver,bryancall/trafficserver,clearswift/trafficserver,vmamidi/trafficserver,clearswift/trafficserver,rahmalik/trafficserver,PSUdaemon/trafficserver,reveller/trafficserver,rahmalik/trafficserver,chenglongwei/trafficserver,taoyunxing/trafficserver,PSUdaemon/trafficserver,chitianhao/trafficserver,reveller/trafficserver,bryancall/trafficserver,chitianhao/trafficserver,SolidWallOfCode/trafficserver