cleanup winner README.md files

Fixed cases where there was a bad trailing backslash.

Improved a few cases where a code block was needed
to highlight some text.

Changed a few cases where a code block needed to
declared as, say, a sh code block.

Fixed a few cases where the winner information was not properly formatted.

Plus a few nits and clarifying text was added.

1988/isaak/README.md

@@ -28,7 +28,7 @@ The original version of this code is in [isaak.alt.c](isaak.alt.c).
 The original entry starts with the line:
 
 ```c
-	main(){};
+main(){};
 ```
 
 This works on some systems.  Why?  Note that `#include <stdio.h>` is given on

1988/reddy/README.md

@@ -19,14 +19,12 @@ char *(*(fun[16])();
 char *(*(*(*(*(*fun[32])))))();
 ```
 
-What happens if you input:
+What happens if you input, and what you do about it?
 
-```
+```c
 char *(*(*(*(*(*fun[32])))))());
 ```
 
-? What can you do about it?
-
 
 ## Judges' remarks:
 

1988/spinellis/README.md

@@ -21,7 +21,7 @@ rm -f spinellis ; cc spinellis.c -o spinellis < input.txt && ./spinellis
 
 and try:
 
-```
+```sh
 rm -f spinellis ; cc spinellis.c -o spinellis < input2.txt && ./spinellis
 ```
 
@@ -36,7 +36,7 @@ cc spinellis.alt.c -o spinellis.alt < input.txt && ./spinellis.alt
 
 and try:
 
-```
+```sh
 cc spinellis.alt.c -o spinellis.alt < input2.txt && ./spinellis.alt
 ```
 

1988/westley/README.md

@@ -1,7 +1,7 @@
 # Best layout
 
 Merlyn LeRoy (Brian Westley)\
-US
+US\
 <http://www.westley.org>