fix improper use of whitespace in README.md files

The use of the markdown trailing whitespace to indicate
line break should NOT be done when the following line is empty.

This removes such improper use of whitespace in README.md files.

1986/bright/README.md

@@ -1,4 +1,4 @@
-# Most useful obfuscation 
+# Most useful obfuscation
 
 Walter Bright
 

1986/hague/README.md

@@ -1,7 +1,7 @@
 # Worst abuse of the C preprocessor
 
 Jim Hague<br>
-UK  
+UK
 
 ## To build:
 

1986/holloway/README.md

@@ -1,7 +1,7 @@
 # Best simple task performed in a complex way
 
 Bruce Holloway<br>
-US  
+US
 
 ## To build:
 

1986/marshall/README.md

@@ -1,6 +1,6 @@
 # Best layout
 
-Eric Marshall   
+Eric Marshall
 
 ## To build:
 

1986/stein/README.md

@@ -1,4 +1,4 @@
-# Best one liner 
+# Best one liner
 
 Jan Stein
 

1986/wall/README.md

@@ -1,7 +1,7 @@
 # Grand prize in most well-rounded in confusion
 
 Larry Wall<br>
-US 
+US
 
 ## To build: