fix(editor): restore native browser zoom keyboard shortcuts

Signed-off-by: Shivam Shukla <lucifer84670@gmail.com>

public/docs/release-notes.md

@@ -7,6 +7,11 @@
 - Added external link whitelist setting (`externalLinkWhitelist` in config.json or `CMD_EXTERNAL_LINK_WHITELIST`) to skip warning page for certain domains
 - Enabled `.webp` for file uploads (for all backends but `imgur`, since it does not support it)
 
+### Bugfixes
+
+- Restore native browser zoom-in keyboard shortcuts in the editor ([#6244](https://github.com/hedgedoc/hedgedoc/issues/6244))
+
+
 ## <i class="fa fa-tag"></i> 1.11.0 <i class="fa fa-calendar-o"></i> 2026-06-18
 
 ### Security fixes

public/js/lib/editor/index.js

@@ -197,15 +197,6 @@ export default class Editor {
       'Shift-Ctrl-6': cm => {
         utils.wrapTextWith(this.editor, cm, '^')
       },
-      'Ctrl-+': cm => {
-        utils.wrapTextWith(this.editor, cm, '+')
-      },
-      'Shift-Ctrl-=': cm => {
-        utils.wrapTextWith(this.editor, cm, '+')
-      },
-      'Ctrl-=': cm => {
-        utils.wrapTextWith(this.editor, cm, '=')
-      },
       'Shift-Ctrl-Backspace': cm => {
         utils.wrapTextWith(this.editor, cm, 'Backspace')
       }