Add newlines at end of files

Author: bkaestner

rules/0100-Writing-a-kata.md

@@ -245,4 +245,4 @@ main =
 ```
 
 So before you dive into the next section, make sure that you have at least
-a rough overview of the capabilities of your language's testing framework.
+a rough overview of the capabilities of your language's testing framework.

rules/0240-Haskell.md

@@ -166,4 +166,4 @@ main = hspec $ do
 
   describe "functionName2" $ do
     -- ... similar to above
-```
+```

rules/0250-Java.md

@@ -48,4 +48,4 @@ arguments, but they __will__ confuse anyone who fails them. By the way, CSharp
 uses the same convention. This isn't surprising, since its testing framework
 NUnit was inspired by JUnit.
 
- [assert-java]: http://junit.org/javadoc/latest/org/junit/Assert.html
+ [assert-java]: http://junit.org/javadoc/latest/org/junit/Assert.html