runtime: fix typo of pushBackAll

Fixes: #49081
Change-Id: Ie6742f1e7a60c2d92ce1283bcfaa3eac521440a1
Reviewed-on: https://go-review.googlesource.com/c/go/+/357629
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Trust: Daniel Martí <mvdan@mvdan.cc>
Trust: Cherry Mui <cherryyz@google.com>
diff --git a/src/runtime/proc.go b/src/runtime/proc.go
index b80f09f..990637e 100644
--- a/src/runtime/proc.go
+++ b/src/runtime/proc.go
@@ -6123,7 +6123,7 @@
 	q.tail.set(gp)
 }
 
-// pushBackAll adds all Gs in l2 to the tail of q. After this q2 must
+// pushBackAll adds all Gs in q2 to the tail of q. After this q2 must
 // not be used.
 func (q *gQueue) pushBackAll(q2 gQueue) {
 	if q2.tail == 0 {