[#2489] Minor tweaks to new buttons functionality

Author: weaverryan

book/forms.rst

@@ -126,7 +126,7 @@ In this example, you've added two fields to your form - ``task`` and ``dueDate``
 corresponding to the ``task`` and ``dueDate`` properties of the ``Task`` class.
 You've also assigned each a "type" (e.g. ``text``, ``date``), which, among
 other things, determines which HTML form tag(s) is rendered for that field.
-At last, you added a submit button for submitting the form to the server.
+At Finally, you added a submit button for submitting the form to the server.
 
 .. versionadded:: 2.3
     Support for submit buttons was added in Symfony 2.3. Before that, you had

reference/forms/types/submit.rst

@@ -22,9 +22,9 @@ A submit button.
 | Class                | :class:`Symfony\\Component\\Form\\Extension\\Core\\Type\\SubmitType` |
 +----------------------+----------------------------------------------------------------------+
 
-Submit buttons feature an additional method
+The Submit button has an additional method
 :method:`Symfony\\Component\\Form\\ClickableInterface::isClicked` that lets you
-check whether this button was used to submit the forms. This is especially
+check whether this button was used to submit the form. This is especially
 useful when :ref:`a form has multiple submit buttons <book-form-submitting-multiple-buttons>`::
 
     if ($form->get('save')->isClicked()) {