stripping trailing whitespace

docs/configuration.md

@@ -215,7 +215,7 @@ Contains a list of all the directories that Psalm should inspect. You can also s
 </projectFiles>
 ```
 
-#### `<fileExtensions>` 
+#### `<fileExtensions>`
 Optional.  A list of extensions to search over. See [Checking non-PHP files](checking_non_php_files.md) to understand how to extend this.
 
 #### `<plugins>`

docs/supported_annotations.md

@@ -458,4 +458,3 @@ Psalm has support for a number of builtin classes and interfaces that you can ex
 Psalm supports PHPDoc’s [type syntax](https://docs.phpdoc.org/guides/types.html), and also the [proposed PHPDoc PSR type syntax](https://github.com/php-fig/fig-standards/blob/master/proposed/phpdoc.md#appendix-a-types).
 
 A detailed write-up is found in [Typing in Psalm](typing_in_psalm.md)
-

docs/what_makes_psalm_complicated.md

@@ -14,14 +14,14 @@ This is a somewhat informal list that might aid others.
   what effect do different PHP elements have on user-asserted logic in if conditionals, ternarys etc.
 - **Generics & Templated code**  
   Figuring out how templated code should work (`@template` tags), how much it should work like it does in other languages (Hack, TypeScript etc.)
-  
+
 ## Supporting the community
 - **Supporting formal PHPDoc annotations**
 - **Supporting informal PHPDoc annotations**  
   e.g. `ArrayIterator|string[]` to denote an `ArrayIterator` over strings
 - **non-Composer projects**  
   e.g. WordPress
-  
+
 ## Making Psalm fast
 - **Parser-based reflection**  
   requires scanning everything necessary for analysis