docs:Added proposed titles for 2025 advent articles.

Author: antononcube

raku-advent-2025/authors.md

@@ -15,9 +15,9 @@ Please also send an easy and fast way to contact you to liz at raku.rocks and li
 reminders.
 
 1. yourname: Your Title
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+2. antononcube: Doing Data Science with Raku
+3. antononcube: Robust code generation combining grammars and LLMs
+4. antononcube: Monadic programming examples
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