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.

1996/schweikh1/README.md

@@ -5,7 +5,7 @@ DFN Network Operation Center
 Schlartaeckerweg 3 (home address)  
 D-71384 Weinstadt  
 Germany  
-<http://www.schweikhardt.net>  
+<http://www.schweikhardt.net>
 
 ## To build:
 
@@ -48,7 +48,7 @@ Nicaean Concilium in 325 Anno Domini.) The algorithm is attributed
 to the famous mathematician Carl Friedrich Gauss ["Meyers Handbuch
 ueber das Weltall", Meyer, 5th Edition, 1973, p149] and is suitable
 for anni domini within the Gregorian Calendar, that is, from 1582 AD
-to 2199 AD: 
+to 2199 AD:
 
 ```
 Let J be the year.
@@ -70,7 +70,7 @@ The interesting Sunday is either:
 ```
 March 22 + d + e   or
 April d + e - 9    (only one of them is a valid date)
-``` 
+```
 
 with the following exceptions:
 
@@ -119,7 +119,7 @@ these easy to remember language elements is justified in my opinion.
 Try to be as precise as can be and no one will comprehend what you mean.
 
 #### The formula:
-      
+
 
 ```
 comprehension = 1/(2**precision)