Format/typo check 1988/dale

This includes the thanks-for-fixes.md file where C code was actually in
the form of a diff (which happened when I was looking for the
differences to put in the file in the first place, forgetting to remove
the [-+] at the time).

1988/dale/README.md

@@ -1,6 +1,6 @@
 # Best abuse of system calls
 
-Paul Dale  
+Paul Dale<br>
 Australia  
 
 ## To build:
@@ -40,7 +40,8 @@ If you have an old enough compiler you can try the original version in
 make clobber alt
 ```
 
-Use `dale.alt` as you would `dale` above.
+Use `dale.alt` as you would `dale` above. To understand the differences in more
+detail, see [thanks-for-fixes.md](/thanks-for-fixes.md).
 
 
 ## Judges' remarks

thanks-for-fixes.md

@@ -379,16 +379,19 @@ modern compilers do not allow directives like:
 
 ```c
 #define _ define
-+#_ P char
-+#_ p int
-+#_ O close(
-...
+#_ P char
+#_ p int
+#_ O close(
+/* ... */
 ```
 
 so Cody changed the lines to be in the form of:
 
 ```c
-#define foo bar
+#define P char
+#define p int
+#define O close(
+/* ... */
 ```
 
 However, to keep the entry as close to as possible in look, Cody kept the `_`