pkg/tailfile: normalize comment formatting

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

pkg/tailfile/tailfile.go

@@ -18,7 +18,7 @@ var eol = []byte("\n")
 // ErrNonPositiveLinesNumber is an error returned if the lines number was negative.
 var ErrNonPositiveLinesNumber = errors.New("The number of lines to extract from the file must be positive")
 
-//TailFile returns last n lines of the passed in file.
+// TailFile returns last n lines of the passed in file.
 func TailFile(f *os.File, n int) ([][]byte, error) {
 	size, err := f.Seek(0, io.SeekEnd)
 	if err != nil {