Add leading sentence in <limits> enums reference

Rageking8 · web-flow · commit 0ba2e7227862 · 2025-06-02T22:56:57.000+08:00
diff --git a/docs/standard-library/limits-enums.md b/docs/standard-library/limits-enums.md
@@ -7,6 +7,8 @@ ms.assetid: c86680a2-ba97-4ed9-8c20-a448857d7dc5
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 # `<limits>` enums
 
+The `<limits>` header provides the following enums:
+
 ## <a name="float_denorm_style"></a> `float_denorm_style`
 
 The enumeration describes the various methods that an implementation can choose for representing a denormalized floating-point value — one too small to represent as a normalized value:
