remove trailing whitespace

Author: Andres-Salamanca

docs/doxygen-awesome-darkmode-toggle.js

@@ -46,7 +46,7 @@ class DoxygenAwesomeDarkModeToggle extends HTMLElement {
             DoxygenAwesomeDarkModeToggle.onSystemPreferenceChanged()
         })
         // Update the color scheme when the tab is made visible again.
-        // It is possible that the appearance was changed in another tab 
+        // It is possible that the appearance was changed in another tab
         // while this tab was in the background.
         document.addEventListener("visibilitychange", visibilityState => {
             if (document.visibilityState === 'visible') {

docs/doxygen-awesome.css

@@ -2257,8 +2257,8 @@ html.dark-mode .iconfclosed {
     background-color: transparent;
 }
 
-/* 
- Class Index Doxygen 1.8 
+/*
+ Class Index Doxygen 1.8
 */
 
 table.classindex {