Remove redundant h3 selector from CSS after heading hierarchy update

Co-authored-by: papotte <21336477+papotte@users.noreply.github.com>

Author: Copilot

src/styles/cv.scss

@@ -77,8 +77,7 @@
         content: ' ';
       }
 
-      > h2,
-      > h3 {
+      > h2 {
         @apply col-span-5;
       }