Update imconfig.h documentation
Update imconfig.h documentation

kylawl/imgui,xunmengfeng/imgui,benoitjacquier/imgui,andresv/imgui,benoitjacquier/imgui,tpoechtrager/imgui,wangshijin/imgui,wasikuss/imgui,usagi/imguixx,wasikuss/imgui,aimotive/imgui-glfw,mikesart/imgui,nmlgc/imgui,shaggytwodope/imgui,nProtect/imgui,Psybrus/imgui,rxantos/imgui,ghassanpl/imgui,cmaughan/imgui,ggtucker/imgui,zho7611/imgui,rmoorman/imgui,ggtucker/imgui,ocornut/imgui,xunmengfeng/imgui,ocornut/imgui,Flix01/imgui,neshume/imgui,nProtect/imgui,Psybrus/imgui,bkaradzic/imgui,thevaber/imgui,zho7611/imgui,twigletguy/imgui,seanmiddleditch/imgui,luiseduardohdbackup/imgui,xythobuz/imgui,gamedeff/imgui,elect86/imgui,aimotive/imgui-glfw,bagobor/imgui,burningreggae/imgui,luiseduardohdbackup/imgui,bkaradzic/imgui,xythobuz/imgui,emoon/imgui,tpoechtrager/imgui,usagi/imguixx,ghassanpl/imgui,seanmiddleditch/imgui,dougbinks/imgui,redblobgames/imgui,Pagghiu/imgui,thennequin/imgui,cmaughan/imgui,andresv/imgui,neshume/imgui,rmoorman/imgui,tom-seddon/imgui,ggtucker/imgui,tom-seddon/imgui,nProtect/imgui,wangshijin/imgui,cmaughan/imgui,sakishum/imgui,mikesart/imgui,ocornut/imgui,shaggytwodope/imgui,thennequin/imgui,bkaradzic/imgui,gamedeff/imgui,Pagghiu/imgui,redblobgames/imgui,kylawl/imgui,Flix01/imgui,GHF/imgui,emoon/imgui,cmaughan/imgui,Flix01/imgui,wflohry/imgui-addons,elect86/imgui,GHF/imgui,burningreggae/imgui,gyakoo/imgui,wflohry/imgui-addons,rxantos/imgui,dougbinks/imgui,twigletguy/imgui,bagobor/imgui,thevaber/imgui,sakishum/imgui,gyakoo/imgui,nmlgc/imgui