minor #2313 [LiveComponent] Fix documentation for select data-model (…

…Nek-)

This PR was merged into the 2.x branch.

Discussion
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[LiveComponent] Fix documentation for select data-model

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| Issues        | None
| License       | MIT

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Commits
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764d5ba [LiveComponent] Fix documentation for select data-model

src/LiveComponent/doc/index.rst

@@ -620,7 +620,7 @@ the user to switch the *entity* to another? For example:
 
     <select data-model="post">
         {% for post in posts %}
-            <option data-model="{{ post.id }}">{{ post.title }}</option>
+            <option value="{{ post.id }}">{{ post.title }}</option>
         {% endfor %}
     </select>