improve layout of 1988/litmaath/index.html

Improved indenting of a code block.

Run `bin/readme2index.sh -v 1 1988/litmaath` to perform the above.

1988/litmaath/README.md

@@ -52,7 +52,7 @@ Note the unusual structure:
 
 ``` <!---c-->
     while (<condition>)
-	     ;
+	 ;
 ```
 
 Did you notice that the body is empty?