Merge branch 'content-editor-strikethrough-doc' into 'master'

Fix the Content Editor strikethrough shortcut docs

See merge request gitlab-org/gitlab!81091

doc/user/shortcuts.md

@@ -166,7 +166,7 @@ These shortcuts are available when editing a file with the
 |----------------|------------------------|-------------|
 | <kbd>Command</kbd> + <kbd>b</kbd> | <kbd>Control</kbd> + <kbd>b</kbd>  | Bold |
 | <kbd>Command</kbd> + <kbd>i</kbd> | <kbd>Control</kbd> + <kbd>i</kbd>   | Italic |
-| <kbd>Command</kbd> + <kbd>Shift</kbd> + <kbd>s</kbd>  | <kbd>Control</kbd> + <kbd>Shift</kbd> + <kbd>s</kbd>   | Strikethrough |
+| <kbd>Command</kbd> + <kbd>Shift</kbd> + <kbd>x</kbd>  | <kbd>Control</kbd> + <kbd>Shift</kbd> + <kbd>x</kbd>   | Strikethrough |
 | <kbd>Command</kbd> + <kbd>e</kbd> | <kbd>Control</kbd> + <kbd>e</kbd>   | Code |
 | <kbd>Command</kbd> + <kbd>Alt</kbd> + <kbd>0</kbd> | <kbd>Control</kbd> + <kbd>Alt</kbd> + <kbd>0</kbd> | Apply normal text style |
 | <kbd>Command</kbd> + <kbd>Alt</kbd> + <kbd>1</kbd> | <kbd>Control</kbd> + <kbd>Alt</kbd> + <kbd>1</kbd> | Apply heading style 1 |