_content/blog/intro-generics: fix typos in code

Change-Id: I10fa17a60891c5e18a5f11895ad84dc7a5282afe
Reviewed-on: https://go-review.googlesource.com/c/website/+/395065
Run-TryBot: Eli Benderskyā€ˇ <eliben@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Trust: Eli Bendersky <eliben@google.com>
diff --git a/_content/blog/intro-generics.md b/_content/blog/intro-generics.md
index 4491711..e1317bb 100644
--- a/_content/blog/intro-generics.md
+++ b/_content/blog/intro-generics.md
@@ -324,7 +324,7 @@
 	// Scale returns a copy of s with each element multiplied by c.
 	// This implementation has a problem, as we will see.
 	func Scale[E constraints.Integer](s []E, c E) []E {
-		r := make([]E, len(s)
+		r := make([]E, len(s))
 		for i, v := range s {
 			r[i] = v * c
 		}
@@ -377,7 +377,7 @@
 {{raw `
 	// Scale returns a copy of s with each element multiplied by c.
 	func Scale[S ~[]E, E constraints.Integer](s S, c E) S {
-		r := make(S, len(s)
+		r := make(S, len(s))
 		for i, v := range s {
 			r[i] = v * c
 		}