Removed white characters at the end of the line in the docs

Author: michalbundyra

docs/book/config-abstract-factory.md

@@ -5,11 +5,11 @@
 You can simplify the process of creating factories by registering
 `Zend\ServiceManager\AbstractFactory\ConfigAbstractFactory` with your service
 manager instance. This allows you to define services using a configuration map,
-rather than having to create separate factories for each of your services. 
+rather than having to create separate factories for each of your services.
 
 ## Enabling the ConfigAbstractFactory
 
-Enable the `ConfigAbstractFactory` in the same way that you would enable 
+Enable the `ConfigAbstractFactory` in the same way that you would enable
 any other abstract factory.
 
 Programmatically:
@@ -75,7 +75,7 @@ return [
     ConfigAbstractFactory::class => [
         MyInvokableClass::class => [],
         MySimpleClass::class => [
-            Logger::class,          
+            Logger::class,
         ],
         Logger::class => [
             Handler::class,
@@ -139,6 +139,6 @@ return [
         'factories' => [
             Adapter::class => AdapterFactory::class, // normal factory not using above config
         ],
-    ],    
+    ],
 ],
 ```

docs/book/configuring-the-service-manager.md

@@ -174,7 +174,7 @@ class MyAbstractFactory implements AbstractFactoryInterface
     {
         return in_array('Traversable', class_implements($requestedName), true);
     }
-    
+
     public function __invoke(ContainerInterface $container, $requestedName, array $options = null)
     {
         return $requestedName();
@@ -233,7 +233,7 @@ $serviceManager = new ServiceManager([
     'factories' => [
         stdClass::class => InvokableFactory::class
     ],
-    
+
     'aliases' => [
         'A' => stdClass::class,
         'B' => 'A'
@@ -328,11 +328,11 @@ The primary issues with initializers are:
   the constructor, it means that the object may be in an "incomplete state". If
   for any reason the initializer is not run (if it was not correctly registered
   for instance), bugs ranging from the subtle to fatal can be introduced.
-  
+
   Instead, we encourage you to inject all necessary dependencies via
   the constructor, using factories. If some dependencies use setter or interface
   injection, use delegator factories.
-  
+
   If a given service has too many dependencies, then it may be a sign that you
   need to split this service into smaller, more focused services.
 

docs/book/index.html

@@ -1,7 +1,7 @@
 <div class="container">
   <div class="jumbotron">
     <h1>zend-servicemanager</h1>
-    
+
     <p>Factory-Driven Dependency Injection Container</p>
 
     <pre><code class="language-bash">$ composer require zendframework/zend-servicemanager</code></pre>

docs/book/plugin-managers.md

@@ -39,7 +39,7 @@ class ValidatorPluginManager extends AbstractPluginManager
         if ($instance instanceof Foo || $instance instanceof Bar) {
             return;
         }
-    
+
         throw new InvalidServiceException('This is not a valid service!');
     }
 }