(partially) fix markdown

README.md

@@ -18,6 +18,7 @@ the Waxholm corpus is quantised into 16 bits, 2 bytes/sample and the
 byte order is big-endian (most significant byte first). The sampling
 frequency is 16 kHz. Here is an example of a file header:
 
+```
 >head -9 fp2001.1.01.smp
 file=samp               ; file type is sampled signal
 msb=first               ; byte order
@@ -28,6 +29,7 @@ view=-10,10
 born=/o/libhex/ad_da.h25
 range=-12303,11168      ; amplitude range
 =
+```
 
 
 LABEL FILES 
@@ -43,6 +45,7 @@ should not be used for training or testing.
 The labels are stored in .mix files. Below is an example of the
 beginning of a mix file.
 
+```
 >head -20 fp2001.1.01.smp.mix
 CORRECTED: OK jesper    Jesper Hogberg Thu Jun 22 13:26:26 EET 1995
 AUTOLABEL: tony       A. de Serpa-Leitao Mon Nov 15 13:44:30 MET 1993
@@ -59,6 +62,7 @@ FR      12565    $'A:   >pm $'A:+        0.785 sec
 FR      13189    #V     >pm #V  >w vill  0.824 sec
 FR      13895    $'I    >pm $'I  0.868 sec
 FR      14700    $L     >pm $L+  0.919 sec
+```
 
 
 The orthographic text representation is after the label 'TEXT:' CT is
@@ -80,13 +84,16 @@ system. It is specified in the included file 'sampa_latex_se.pdf'.
 
 Some extra labels at the phonetic level have been defined. 
 The most common ones are:
-sm                    lip or tongue opening
-p:                    silent interval
-pa                    aspirative sound from breathing
-kl                    click sound
-v                     short vocalic segment between consonants
-upper case of stops   occlusion
-lower case of stops   burst
+
+|                     |                                          |
+|---------------------|------------------------------------------|
+|sm                   | lip or tongue opening                    |
+|p:                   | silent interval                          |
+|pa                   | aspirative sound from breathing          |
+|kl                   | click sound                              |
+|v                    | short vocalic segment between consonants |
+|upper case of stops  | occlusion                                |
+|lower case of stops  | burst                                    |
 
 The label 'Labels:' before the FR lines is a text string assembled
 from the FR labels