design: 43651-type-parameters.md: fix type parameter name

Change-Id: Ie1983f829abcd657d8a0e686ae86fef380542648
GitHub-Last-Rev: a21d9fdf4298432372ef2b4367bb2934c3413bf2
GitHub-Pull-Request: golang/proposal#35
Reviewed-on: https://go-review.googlesource.com/c/proposal/+/344109
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/design/43651-type-parameters.md b/design/43651-type-parameters.md
index 4854d86..ce32a88 100644
--- a/design/43651-type-parameters.md
+++ b/design/43651-type-parameters.md
@@ -3295,7 +3295,7 @@
 
 // SliceFn sorts the slice s according to the function cmp.
 func SliceFn[T any](s []T, cmp func(T, T) bool) {
-	sort.Sort(sliceFn[E]{s, cmp})
+	sort.Sort(sliceFn[T]{s, cmp})
 }
 ```