make clear: no AI in proposals

Author: orbeckst

_posts/2026-02-19-gsoc2026.md

@@ -152,8 +152,7 @@ We ask you to submit a short **pre-proposal** so that we can evaluate your under
 Submit your pre-proposal via our [pre-proposal submission form][submission form] **by March 9, 2026**. The submission form will go live a few days after this post.
 
 <div style="border: 1px solid #F00; padding: 10px; margin: 10px 0;">
-    <p>
-    <strong>Do not use generative AI</strong> to <strong>develop or write</strong> your pre-proposal. We need to hear <em>your</em> ideas and voice.
+    <p>❗<strong>Do not use generative AI</strong> to <strong>develop or write</strong> your pre-proposal. We need to hear <em>your</em> ideas and voice.
 	</p>
 	<p><small>You are allowed to use AI tools for grammar and spell checking and for translation into English although we are more than happy to read your proposal in your own English words.</small></p>
 </div>
@@ -183,8 +182,7 @@ If you pass the interview stage, you will be invited to submit your full GSoC pr
 Please read the additional information on our [expectations for a full proposal](https://github.com/MDAnalysis/mdanalysis/wiki/Google-Summer-Of-Code#full-proposal).
 
 <div style="border: 1px solid #F00; padding: 10px; margin: 10px 0;">
-    <p>
-    <strong>Do not use generative AI</strong> to <strong>develop or write</strong> your proposal. We need to hear <em>your</em> ideas and voice.
+    <p>❗<strong>Do not use generative AI</strong> to <strong>develop or write</strong> your proposal. We need to hear <em>your</em> ideas and voice.
 	</p>
 	<p><small>You are allowed to use AI tools for grammar and spell checking and for translation into English although we are more than happy to read your proposal in your own English words.</small></p>
 </div>