Add "Remarks" heading in C2998 error reference

Rageking8 · web-flow · commit 21a1b6ebb963 · 2025-06-29T18:21:10.000+08:00
diff --git a/docs/error-messages/compiler-errors-2/compiler-error-c2998.md b/docs/error-messages/compiler-errors-2/compiler-error-c2998.md
@@ -9,4 +9,6 @@ helpviewer_keywords: ["C2998"]
 
 > '*identifier*': cannot be a template definition
 
+## Remarks
+
 The compiler could not process the syntax used in the template definition.
