Rollup merge of #75393 - GuillaumeGomez:fix-help-shortcut, r=pickfire

Fully handle "?" shortcut

Fixes #75386.

cc @runiq

Author: tmandry

src/librustdoc/html/static/main.js

@@ -408,9 +408,7 @@ function defocusSearchBar() {
                 break;
 
             case "?":
-                if (ev.shiftKey) {
-                    displayHelp(true, ev);
-                }
+                displayHelp(true, ev);
                 break;
             }
         }