fix heading

AvicennaJr · AvicennaJr · commit 9fbc42b28829 · 2023-03-20T10:07:27.000+03:00
diff --git a/docs/en/keywords.md b/docs/en/keywords.md
@@ -41,7 +41,7 @@ The table below lists the reserved keywords in Nuru. These words have specific m
 </tbody>
 </table>
 
-### BuiltIns
+## BuiltIns
 
 Nuru also provides several built-in functions that are reserved and cannot be used as identifiers. These functions offer essential functionalities for common tasks in the language:
 
