internal: fix typo

Change-Id: I56eea523be552c05a9588bc18bdbfe4cddada8a3
Reviewed-on: https://go-review.googlesource.com/c/tools/+/504755
Reviewed-by: Robert Findley <rfindley@google.com>
Run-TryBot: shuang cui <imcusg@gmail.com>
gopls-CI: kokoro <noreply+kokoro@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>
diff --git a/internal/jsonrpc2_v2/serve_test.go b/internal/jsonrpc2_v2/serve_test.go
index 22339c8..c5c41e2 100644
--- a/internal/jsonrpc2_v2/serve_test.go
+++ b/internal/jsonrpc2_v2/serve_test.go
@@ -133,7 +133,7 @@
 
 	d := 1 * time.Millisecond
 	for {
-		t.Logf("testing with idle timout %v", d)
+		t.Logf("testing with idle timeout %v", d)
 		if !try(d) {
 			d *= 2
 			continue