fixed some skipped comments

tests/Silex/Tests/Provider/DoctrineServiceProviderTest.php

@@ -24,7 +24,7 @@ class DoctrineServiceProviderTest extends \PHPUnit_Framework_TestCase
     public function setUp()
     {
         if (!is_dir(__DIR__.'/../../../../vendor/doctrine/common/lib') || !is_dir(__DIR__.'/../../../../vendor/doctrine/dbal/lib')) {
-            $this->markTestSkipped('Doctrine Common/DBAL submodules were not installed.');
+            $this->markTestSkipped('Doctrine Common/DBAL dependencies were not installed.');
         }
     }
 

tests/Silex/Tests/Provider/MonologServiceProviderTest.php

@@ -28,7 +28,7 @@ class MonologServiceProviderTest extends \PHPUnit_Framework_TestCase
     public function setUp()
     {
         if (!is_dir(__DIR__.'/../../../../vendor/monolog/monolog/src')) {
-            $this->markTestSkipped('Monolog submodule was not installed.');
+            $this->markTestSkipped('Monolog dependency was not installed.');
         }
     }
 

tests/Silex/Tests/Provider/TwigServiceProviderTest.php

@@ -26,7 +26,7 @@ class TwigServiceProviderTest extends \PHPUnit_Framework_TestCase
     public function setUp()
     {
         if (!is_dir(__DIR__.'/../../../../vendor/twig/twig/lib')) {
-            $this->markTestSkipped('Twig submodule was not installed.');
+            $this->markTestSkipped('Twig dependency was not installed.');
         }
     }
 

tests/Silex/Tests/Provider/ValidatorServiceProviderTest.php

@@ -24,7 +24,7 @@ class ValidatorServiceProviderTest extends \PHPUnit_Framework_TestCase
     public function setUp()
     {
         if (!is_dir(__DIR__.'/../../../../vendor/symfony/validator')) {
-            $this->markTestSkipped('Validator submodule was not installed.');
+            $this->markTestSkipped('Validator dependency was not installed.');
         }
     }