Update parameters.rst

xelan · weaverryan · commit e97726b8c1a1 · 2013-11-16T12:28:06.000-06:00
diff --git a/components/dependency_injection/parameters.rst b/components/dependency_injection/parameters.rst
@@ -333,9 +333,9 @@ Yaml
 Start the string with  ``@`` or ``@?`` to reference a service in Yaml.
 
 * ``@mailer`` references the ``mailer`` service. If the service does not
-  exists, an exception will be thrown;
+  exist, an exception will be thrown;
 * ``@?mailer`` references the ``mailer`` service. If the service does not
-  exists, it will be ignored;
+  exist, it will be ignored;
 
 .. tip::
 
