Format fix 1993/ant/README.md

1993/ant/README.md

@@ -2,30 +2,36 @@
 
 Anthony Howe  
 Mortice Kern Systems, Inc.  
-	Unit 1, 14 Weber Street North,
+Unit 1, 14 Weber Street North  
 Waterloo, Ontario, N2J 3G4  
 Canada  
 
 ## To build:
 
+```sh
 make all
+```
 
 ## To run:
 
+```sh
 ./ant 'ERE' [file ...]
+```
 
 ## Try:
 
 You may also want to try the author's test suite:
 
+```sh
 make -f ant.test.mk
+```
 
 ## Judges' comments:
 
-See the author's Posix P1003.2-like documentation file ant.txt
-for more information.
+See the author's POSIX P1003.2-like documentation file ant.txt for more
+information.
 
-This program demonstrates that Posix doesn't guarantee readability.  :-)
+This program demonstrates that POSIX doesn't guarantee readability.  :-)
 
 ## Author's comments: