fix typo in base.scss (#6399)

appropiate -> appropriate

apps/desktop/src/scss/base.scss

@@ -17,7 +17,7 @@ body {
 body {
   color: $text-color;
 
-  // We initially rely on electron to provide the appropiate background color.
+  // We initially rely on electron to provide the appropriate background color.
   // This ensures the background color while reloading is correct to avoid a jarring missmatch.
   background-color: transparent;