Typo correction in imgui_demo.cpp (#4892)

imgui_demo.cpp

@@ -5997,7 +5997,7 @@ void ImGui::ShowAboutWindow(bool* p_open)
 namespace ImGui { IMGUI_API void ShowFontAtlas(ImFontAtlas* atlas); }
 
 // Demo helper function to select among loaded fonts.
-// Here we use the regular BeginCombo()/EndCombo() api which is more the more flexible one.
+// Here we use the regular BeginCombo()/EndCombo() api which is the more flexible one.
 void ImGui::ShowFontSelector(const char* label)
 {
     ImGuiIO& io = ImGui::GetIO();