Fix typo and godoc

store/streaming/file/service.go

@@ -62,7 +62,7 @@ func NewStreamingService(writeDir, filePrefix string, storeKeys []types.StoreKey
 	for _, key := range storeKeys {
 		listeners[key] = append(listeners[key], listener)
 	}
-	// check that the writeDir exists and is writeable so that we can catch the error here at initialization if it is not
+	// check that the writeDir exists and is writable so that we can catch the error here at initialization if it is not
 	// we don't open a dstFile until we receive our first ABCI message
 	if err := isDirWriteable(writeDir); err != nil {
 		return nil, err

store/streaming/file/service_test.go

@@ -372,7 +372,7 @@ func readInFile(name string) ([]byte, error) {
 	return ioutil.ReadFile(path)
 }
 
-// Returns all of the protobuf messages contained in the byte array as an array of byte arrays
+// segmentBytes returns all of the protobuf messages contained in the byte array as an array of byte arrays
 // The messages have their length prefix removed
 func segmentBytes(bz []byte) ([][]byte, error) {
 	var err error
@@ -388,7 +388,7 @@ func segmentBytes(bz []byte) ([][]byte, error) {
 	return segments, nil
 }
 
-// Returns the bytes for the leading protobuf object in the byte array (removing the length prefix) and returns the remainder of the byte array
+// getHeadSegment returns the bytes for the leading protobuf object in the byte array (removing the length prefix) and returns the remainder of the byte array
 func getHeadSegment(bz []byte) ([]byte, []byte, error) {
 	size, prefixSize := binary.Uvarint(bz)
 	if prefixSize < 0 {