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.

2020/ferguson2/README.md

@@ -3,7 +3,7 @@
 Cody Boone Ferguson <ioccc@xexyl.net>    
 <https://ioccc.xexyl.net>   
 <https://xexyl.net>  
-Mastodon: [@xexyl@fosstodon.org](https://fosstodon.org/@xexyl)    
+Mastodon: [@xexyl@fosstodon.org](https://fosstodon.org/@xexyl)
 
 
 ## To build:
@@ -15,10 +15,10 @@ make
 ## To run:
 
 ```sh
-./prog  
+./prog
 
 # get recode help:
-./recode -h  
+./recode -h
 
 # general syntax for recode passing to Enigma machine:  
 ./recode [options] | ./prog - 2>/dev/null  
@@ -26,14 +26,14 @@ make
 ./recode [options]  
   
 # recode prompts for settings; pass to Enigma machine:  
-./recode | ./prog - 2>/dev/null   
+./recode | ./prog - 2>/dev/null
 
 # recode reads from input file, prompts for settings; pass to Enigma machine:  
-./recode -finput | ./prog - 2>/dev/null  
+./recode -finput | ./prog - 2>/dev/null
 
 # recode reads config from string or file; pass to Enigma machine after
 # prompting for input:
-./recode -R<string|file> | ./prog - 2>/dev/null  
+./recode -R<string|file> | ./prog - 2>/dev/null
 
 # write config to output file; pass to Enigma machine after prompting for input:  
 ./recode -o<config> | ./prog - 2>/dev/null  
@@ -42,7 +42,7 @@ make
 ./recode -r
   
 # show Enigma machine settings after selection / generation:    
-./recode -v  
+./recode -v
 
 ```
 
@@ -64,7 +64,7 @@ echo IOCCC | ./prog | ./prog
 echo testing test tests | ./recode  
 echo testing test tests | ./recode | ./prog - 2>/dev/null  
 echo testing test tests | ./recode | ./prog - 2>/dev/null | ./recode  
-echo testing test tests | ./recode | ./prog - 2>/dev/null | ./recode | ./prog - 2>/dev/null  
+echo testing test tests | ./recode | ./prog - 2>/dev/null | ./recode | ./prog - 2>/dev/null
 
 # even more obfuscated fun saving and reading from files:
 #
@@ -112,7 +112,7 @@ There is a good deal of useful documentation that is provided with this entry:
 
 * [chocolate-cake.html][] (or [chocolate-cake.md](chocolate-cake.md) if reading on GitHub)   
 	- Because most of us could use some *Double-layered Chocolate Fudge Cake*!  
-	- NOTE: see [recode.html][] (or [recode.md](recode.md) for details about how to decrypt this!  
+	- NOTE: see [recode.html][] (or [recode.md](recode.md) for details about how to decrypt this!
 
 
 [recode.html]: recode.html