eth/downloader: fix typo in downloader.go (#24704)

synchornization -> synchronization

Author: eltociear

eth/downloader/downloader.go

@@ -358,7 +358,7 @@ func (d *Downloader) LegacySync(id string, head common.Hash, td, ttd *big.Int, m
 // checks fail an error will be returned. This method is synchronous
 func (d *Downloader) synchronise(id string, hash common.Hash, td, ttd *big.Int, mode SyncMode, beaconMode bool, beaconPing chan struct{}) error {
 	// The beacon header syncer is async. It will start this synchronization and
-	// will continue doing other tasks. However, if synchornization needs to be
+	// will continue doing other tasks. However, if synchronization needs to be
 	// cancelled, the syncer needs to know if we reached the startup point (and
 	// inited the cancel cannel) or not yet. Make sure that we'll signal even in
 	// case of a failure.