Fix code block formatting in README.md for CSV example

README.md

@@ -101,10 +101,13 @@ All splits are provided as CSV files referencing the audio files in the correspo
 
 Example row in a CSV file:
 
+```code
+
 | filename                | label   | meter | alt_meter | 
 |-------------------------|---------|-------|-----------|
 | GTZAN/blues.00000.wav   | three   |   3   |    6      |
 
+
 Meter2800/
 ├── GTZAN/
 ├── MAG/