fix typo in test

Author: komik966

tests/Swagger/Serializer/DocumentationNormalizerTest.php

@@ -88,7 +88,7 @@ public function testNormalize()
         $propertyMetadataFactoryProphecy = $this->prophesize(PropertyMetadataFactoryInterface::class);
         $propertyMetadataFactoryProphecy->create(Dummy::class, 'id')->shouldBeCalled()->willReturn(new PropertyMetadata(new Type(Type::BUILTIN_TYPE_INT), 'This is an id.', true, false));
         $propertyMetadataFactoryProphecy->create(Dummy::class, 'name')->shouldBeCalled()->willReturn(new PropertyMetadata(new Type(Type::BUILTIN_TYPE_STRING), 'This is a name.', true, true, true, true, false, false, null, null, []));
-        $propertyMetadataFactoryProphecy->create(Dummy::class, 'description')->shouldBeCalled()->willReturn(new PropertyMetadata(new Type(Type::BUILTIN_TYPE_STRING), 'This is a initializable but not writable property.', true, false, true, true, false, false, null, null, [], null, true));
+        $propertyMetadataFactoryProphecy->create(Dummy::class, 'description')->shouldBeCalled()->willReturn(new PropertyMetadata(new Type(Type::BUILTIN_TYPE_STRING), 'This is an initializable but not writable property.', true, false, true, true, false, false, null, null, [], null, true));
         $resourceClassResolverProphecy = $this->prophesize(ResourceClassResolverInterface::class);
         $resourceClassResolverProphecy->isResourceClass(Dummy::class)->willReturn(true);
 
@@ -302,7 +302,7 @@ public function testNormalize()
                         ]),
                         'description' => new \ArrayObject([
                             'type' => 'string',
-                            'description' => 'This is a initializable but not writable property.',
+                            'description' => 'This is an initializable but not writable property.',
                         ]),
                     ],
                 ]),