raft: fix a few comments

raft/raft.go

@@ -192,7 +192,7 @@ type Config struct {
 	// this feature would be in a situation where the Raft leader is used to
 	// compute the data of a proposal, for example, adding a timestamp from a
 	// hybrid logical clock to data in a monotonically increasing way. Forwarding
-	// should be disabled to prevent a follower with an innaccurate hybrid
+	// should be disabled to prevent a follower with an inaccurate hybrid
 	// logical clock from assigning the timestamp and then forwarding the data
 	// to the leader.
 	DisableProposalForwarding bool

raft/raft_snap_test.go

@@ -38,8 +38,8 @@ func TestSendingSnapshotSetPendingSnapshot(t *testing.T) {
 	sm.becomeCandidate()
 	sm.becomeLeader()
 
-	// force set the next of node 1, so that
-	// node 1 needs a snapshot
+	// force set the next of node 2, so that
+	// node 2 needs a snapshot
 	sm.prs[2].Next = sm.raftLog.firstIndex()
 
 	sm.Step(pb.Message{From: 2, To: 1, Type: pb.MsgAppResp, Index: sm.prs[2].Next - 1, Reject: true})