Fix allegro5_example build instructions
Fix allegro5_example build instructions

nProtect/imgui,mikesart/imgui,burningreggae/imgui,bkaradzic/imgui,nProtect/imgui,ggtucker/imgui,ocornut/imgui,ggtucker/imgui,cmaughan/imgui,ocornut/imgui,cmaughan/imgui,dougbinks/imgui,Flix01/imgui,Flix01/imgui,wflohry/imgui-addons,Flix01/imgui,mikesart/imgui,bkaradzic/imgui,burningreggae/imgui,ocornut/imgui,wflohry/imgui-addons,cmaughan/imgui,nProtect/imgui,dougbinks/imgui,cmaughan/imgui,aimotive/imgui-glfw,bkaradzic/imgui,aimotive/imgui-glfw,ggtucker/imgui