tracks/java/exercises/spiral-matrix/README.md in trackler-2.2.1.45 vs tracks/java/exercises/spiral-matrix/README.md in trackler-2.2.1.46

@@ -6,18 +6,18 @@
 in the top-left corner, increasing in an inward, clockwise spiral order,
 like these examples:
 
 ###### Spiral matrix of size 3
 
-```plain
+```text
 1 2 3
 8 9 4
 7 6 5
 ```
 
 ###### Spiral matrix of size 4
 
-```plain
+```text
  1  2  3 4
 12 13 14 5
 11 16 15 6
 10  9  8 7
 ```