*: misc typos and go vet fixes

clientv3/lease.go

@@ -354,8 +354,8 @@ func (l *lessor) recvKeepAlive(resp *pb.LeaseKeepAliveResponse) {
 	}
 }
 
-// deadlineLoop reaps any keep alive channels that have not recieved a resposne within
-// the lease TTL
+// deadlineLoop reaps any keep alive channels that have not received a response
+// within the lease TTL
 func (l *lessor) deadlineLoop() {
 	for {
 		select {

pkg/fileutil/preallocate_unix.go

@@ -27,7 +27,7 @@ func preallocExtend(f *os.File, sizeInBytes int64) error {
 	if err != nil {
 		errno, ok := err.(syscall.Errno)
 		// not supported; fallback
-		// fallocate EINTRs frequently in some enviroments; fallback
+		// fallocate EINTRs frequently in some environments; fallback
 		if ok && (errno == syscall.ENOTSUP || errno == syscall.EINTR) {
 			return preallocExtendTrunc(f, sizeInBytes)
 		}