Fix Godoc

Change-Id: I9d216e99387a24eff73f9793083ef996e69abfae
diff --git a/matrix.go b/matrix.go
index 7eda112..52e3ad7 100644
--- a/matrix.go
+++ b/matrix.go
@@ -209,7 +209,7 @@
 	return int64(all), err
 }
 
-// LoadDatokFile reads a double array represented tokenizer
+// LoadMatrixFile reads a matrix represented tokenizer
 // from a file.
 func LoadMatrixFile(file string) *MatrixTokenizer {
 	f, err := os.Open(file)
@@ -230,7 +230,7 @@
 	return ParseMatrix(gz)
 }
 
-// LoadMatrixFile reads a matrix represented tokenizer
+// ParseMatrix reads a matrix represented tokenizer
 // from an io.Reader
 func ParseMatrix(ior io.Reader) *MatrixTokenizer {