Fix a typo in the demo text (#3840)
Fix a typo in the demo text (#3840)


Flix01/imgui,bkaradzic/imgui,ocornut/imgui,ggtucker/imgui,ggtucker/imgui,Flix01/imgui,nProtect/imgui,bkaradzic/imgui,ggtucker/imgui,ocornut/imgui,bkaradzic/imgui,ocornut/imgui,nProtect/imgui,nProtect/imgui,Flix01/imgui