Updates to README.md files in 1990 entries

1990/dg/README.md

@@ -11,15 +11,15 @@
         make all
 
 
-### To run:
+## To run:
 
 	echo foo bar | ./dg
 
-### Try:
+## Try:
 
 	echo "to C or not to C" | ./dg
 
-## Judges' comments
+## Judges' comments:
 
 Some C preprocessors got confused about single quotes in certain cases.
 In particular, the following source line:
@@ -34,7 +34,7 @@ if the C preprocessor botches single quotes in cpp expansions, which we have
 done for the wider audience.
 
 
-## Author's comments
+## Author's comments:
 
 If my preprocessor could hack it, I could write this as one single
 line rather than 4, but when I do that I get a complaint "defines