runtime: tweak example code for gorecover

Change-Id: Ie545610fab008f7855bcb1a608f98e0c5109ec20
GitHub-Last-Rev: 66401b9
GitHub-Pull-Request: #76100
Reviewed-on: https://go-review.googlesource.com/c/go/+/716040
Auto-Submit: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Keith Randall <khr@google.com>

Author: callthingsoff

src/runtime/panic.go

@@ -1108,7 +1108,7 @@ func gorecover() any {
 	// frame between gopanic and gorecover.
 	//
 	// We don't recover this:
-	//     defer func() { func() { recover() }() }
+	//     defer func() { func() { recover() }() }()
 	// because there are 2 non-wrapper frames.
 	//
 	// We don't recover this: