fix: change metaDisplay key to Alt for "Table of contents" (#2187)

* change `metaDisplay` key to Alt for "Table of contents"

Co-authored-by: Tom Moor <tom.moor@gmail.com>

app/scenes/Document/components/Document.js

@@ -173,7 +173,7 @@ class DocumentScene extends React.Component<Props> {
     this.onSave({ publish: true, done: true });
   }
 
-  @keydown(`${meta}+ctrl+h`)
+  @keydown("ctrl+alt+h")
   onToggleTableOfContents(ev) {
     if (!this.props.readOnly) return;
 

app/scenes/Document/components/Header.js

@@ -83,7 +83,7 @@ function DocumentHeader({
   const toc = (
     <Tooltip
       tooltip={ui.tocVisible ? t("Hide contents") : t("Show contents")}
-      shortcut={`ctrl+${metaDisplay}+h`}
+      shortcut="ctrl+alt+h"
       delay={250}
       placement="bottom"
     >

app/scenes/KeyboardShortcuts.js

@@ -33,7 +33,7 @@ function KeyboardShortcuts() {
           {
             shortcut: (
               <>
-                <Key>Ctrl</Key> + <Key>{metaDisplay}</Key> + <Key>h</Key>
+                <Key>Ctrl</Key> + <Key>Alt</Key> + <Key>h</Key>
               </>
             ),
             label: t("Table of contents"),