fix standard headers and header spacing in winner README.md files

2012/tromp/README.md

@@ -31,7 +31,7 @@ cat binary-prog.Blc data | ./tromp
 ```
 
 
-## Try:
+### Try:
 
 ```sh
 (cat hilbert.Blc; echo -n 1234) | ./tromp
@@ -39,6 +39,7 @@ cat binary-prog.Blc data | ./tromp
 cat primes.blc | ./tromp -b | ./primes.pl
 ```
 
+
 ## Judges' remarks:
 
 The judges dare to say that the data files this entry is processing