chore: add announcement file for PR

announce.md

@@ -0,0 +1,36 @@
+Previously, if you had a file like this:
+
+```html
+<p>Some text 1234</p>
+<script type="text/javascript">
+  // More text 1234
+  foo();
+</script>
+```
+
+Pressing `Space + c` (toggle comment) on the JavaScript comment would've used the HTML comment token:
+
+```html
+<p>Some text 1234</p>
+<script type="text/javascript">
+  <!-- // More text 1234 -->
+  foo();
+</script>
+```
+
+This PR fixes that. Now, the comment token is properly recognized:
+
+```hmtl
+<p>
+  Some text 1234
+</p>
+<script type="text/javascript">
+  More text 1234
+  foo();
+</script>
+```
+
+It works in _all_ languages that properly inject comment tokens. For instance, JSX, Svelte, and others.
+
+Closes https://github.com/helix-editor/helix/issues/7364
+Closes https://github.com/helix-editor/helix/issues/11647