Right-align OK button in About dialog

Author: djwisdom

pcode-settings.json

@@ -6,12 +6,12 @@
   "word_wrap": true,
   "show_line_numbers": true,
   "show_minimap": true,
-  "show_spaces": false,
+  "show_spaces": true,
   "highlight_line": 0,
   "show_tabs": true,
   "tab_size": 4,
   "font_size": 18,
   "font_name": "JetBrainsMonoNLNerdFont-Regular",
   "last_open_dir": "C:\\Users\\casse\\github\\pcode-editor\\src",
-  "recent_files": ["C:\\Users\\casse\\github\\pcode-editor\\src\\editor_app.cpp", "C:\\Users\\casse\\github\\pcode-editor\\src\\main.cpp", "C:\\Users\\casse\\github\\pcode-editor\\src\\editor_app.h", "C:\\Users\\casse\\github\\pcode-editor\\CMakeLists.txt", "C:\\Users\\casse\\github\\pcode-editor\\TESTS.md", "C:\\Users\\casse\\github\\pcode-editor\\IMPLEMENTATION_SUMMARY.md", "C:\\Users\\casse\\github\\pcode-editor\\BUILD_SYSTEM.md", ".\\BUILD_SYSTEM.md"]
+  "recent_files": ["C:\\Users\\casse\\github\\pcode-editor\\src\\main.cpp", "C:\\Users\\casse\\github\\pcode-editor\\src\\editor_app.cpp", "C:\\Users\\casse\\github\\pcode-editor\\src\\editor_app.h", "C:\\Users\\casse\\github\\pcode-editor\\CMakeLists.txt", "C:\\Users\\casse\\github\\pcode-editor\\TESTS.md", "C:\\Users\\casse\\github\\pcode-editor\\IMPLEMENTATION_SUMMARY.md", "C:\\Users\\casse\\github\\pcode-editor\\BUILD_SYSTEM.md", ".\\BUILD_SYSTEM.md"]
 }

src/editor_app.cpp

@@ -2304,6 +2304,7 @@ void EditorApp::render_about_dialog() {
 
         ImGui::Separator();
 
+        ImGui::SetCursorPosX(ImGui::GetWindowWidth() - ImGui::GetFrameHeight() - ImGui::GetStyle().WindowPadding.x);
         if (ImGui::Button("OK")) {
             show_about_ = false;
         }