doc: correct IsNil link for pkg.go.dev (#418)

invzhi · web-flow · commit b23221e61344 · 2024-06-27T13:48:18.000+02:00
diff --git a/README.md b/README.md
@@ -216,7 +216,7 @@ Conditional helpers:
 
 Type manipulation helpers:
 
-- [IsNil](#IsNil)
+- [IsNil](#isnil)
 - [ToPtr](#toptr)
 - [EmptyableToPtr](#emptyabletoptr)
 - [FromPtr](#fromptr)
