Update section headers in README.md

Author: marcgc21

README.md

@@ -58,7 +58,7 @@ Features:
 - All projects from 2021-2026 in one place
 
 
-### AI Usage Policy
+## AI Usage Policy
 
 We strongly discourage the use of AI tools to generate your GSoC proposal. Your proposal must reflect your own understanding, writing skills, and technical planning ability.
 
@@ -69,7 +69,7 @@ Please read our full policy here:
 👉 https://github.com/ruxailab/gsoc/wiki/AI-Policy
 
 
-### Original Ideas Pages
+## Original Ideas Pages
 
 Check out our project's ideas on the [Ideas Page](/ideas2026.md), and see if you find something that catches your attention. If you don't get interested in one of the proposals or have another idea that you want to make, validate it with one of the mentors before submitting your proposal. Check also our ideas list from previous years: