Merge pull request #4484 from charleswhchan/fix-typo-2

Fix typos.

cluster/points_writer.go

@@ -323,7 +323,7 @@ func (w *PointsWriter) writeToShard(shard *meta.ShardInfo, database, retentionPo
 
 				// If the write consistency level is ANY, then a successful hinted handoff can
 				// be considered a successful write so send nil to the response channel
-				// otherwise, let the original error propogate to the response channel
+				// otherwise, let the original error propagate to the response channel
 				if hherr == nil && consistency == ConsistencyLevelAny {
 					ch <- &AsyncWriteResult{owner, nil}
 					return

cluster/points_writer_test.go

@@ -228,9 +228,9 @@ func TestPointsWriter_WritePoints(t *testing.T) {
 			expErr:          nil,
 		},
 
-		// Write to non-existant database
+		// Write to non-existent database
 		{
-			name:            "write to non-existant database",
+			name:            "write to non-existent database",
 			database:        "doesnt_exist",
 			retentionPolicy: "",
 			consistency:     cluster.ConsistencyLevelAny,