Update examples/official-site/your-first-sql-website/extensions-to-sql.md

Co-authored-by: Ophir LOJKINE <[email protected]>

Author: ppom0

examples/official-site/your-first-sql-website/extensions-to-sql.md

@@ -151,7 +151,7 @@ See the [functions page](/functions.sql) for more details.
 
 They're either executed before or after the query is run in the database.
 
-1. **Execution before the query**
+### Execution functions *before* sending a query to the database
 
 When they don't process results coming from the database: