enable hardbreak demo

docs/src/demos/Extensions/HardBreak/index.vue

@@ -10,7 +10,7 @@ import { EditorContent } from '@tiptap/vue'
 import Document from '@tiptap/extension-document'
 import Paragraph from '@tiptap/extension-paragraph'
 import Text from '@tiptap/extension-text'
-// import HardBreak from '@tiptap/extension-hard-break'
+import HardBreak from '@tiptap/extension-hard-break'
 
 export default {
   components: {
@@ -29,7 +29,7 @@ export default {
         Document(),
         Paragraph(),
         Text(),
-        // HardBreak(),
+        HardBreak(),
       ],
       content: `
         <p>

docs/src/docPages/api/extensions/hard-break.md

@@ -4,14 +4,14 @@ The HardBreak extensions adds support for the `<br>` HTML tag, which forces a li
 ## Options
 *None*
 
-## Commands
 ## Commands
 | Command   | Options | Description       |
 | --------- | ------- | ----------------- |
 | hardBreak | —       | Add a line break. |
 
 ## Keyboard shortcuts
-* Windows & Linux: `Shift` + `Enter`
+* `Shift` + `Enter`
+* Windows & Linux: `Control` + `Enter`
 * macOS: `Command` + `Enter`
 
 ## Source Code