runtime: fix typo in mgcscavenge.go

recieved -> received

Change-Id: I84336170e179832604e1311ea9263af36f9ce15a
GitHub-Last-Rev: a6068c1
GitHub-Pull-Request: #43845
Reviewed-on: https://go-review.googlesource.com/c/go/+/285675
Reviewed-by: Keith Randall <khr@golang.org>
Trust: Alberto Donizetti <alb.donizetti@gmail.com>

src/runtime/mgcscavenge.go

@@ -562,7 +562,7 @@ func (p *pageAlloc) scavengeUnreserve(r addrRange, gen uint32) {
 func (p *pageAlloc) scavengeOne(work addrRange, max uintptr, mayUnlock bool) (uintptr, addrRange) {
 	assertLockHeld(p.mheapLock)
 
-	// Defensively check if we've recieved an empty address range.
+	// Defensively check if we've received an empty address range.
 	// If so, just return.
 	if work.size() == 0 {
 		// Nothing to do.