Update 1986 winning entries' README.md files

Format and typo fixes.

1986/wall/README.md

@@ -4,7 +4,7 @@ Larry Wall
 System Development Corporation  
 Santa Monica  
 California  
-US of A  
+US 
 
 ## To build:
 
@@ -17,7 +17,7 @@ this work with gcc (in particular the patch uses `strdup()` on two strings).
 Thank you Yusuke! [Cody Boone Ferguson](/winners.html#Cody_Boone_Ferguson) fixed
 this so that it does not require `-traditional-cpp`. This took a fair bit of
 tinkering as this entry *is* strange. The original code is provided to allow one
-to easily see how different C was in these days. See below for details. Thank
+to easily see how different C was in those days. See below for details. Thank
 you Cody for your assistance!
 
 ## To use:
@@ -49,14 +49,14 @@ This caused a number of System V C pre-preprocessors to gripe about a
 syntax error.
 
 This program is a masterpiece of obfuscation and humor.  Larry Wall
-(the hacker who gave us rn and patch) asks you to compile and consider
+(the hacker who gave us `rn` and `patch`) asks you to compile and consider
 the warning message generated by the C compiler.  Then execute the
 program and type characters into its standard input.  You will see why
 the compiler documents the program.
 
 ## Author's remarks:
 
-No comments were provided by the author.
+No remarks were provided by the author.
 
 ## Copyright and CC BY-SA 4.0 License: