Merge branch '3.4' into 4.4

* 3.4:
  typo
  [#14076] fix typos

Author: xabbuh

form/create_custom_field_type.rst

@@ -68,7 +68,7 @@ the logic and rendering of that field type.
     The PHP class extension mechanism and the Symfony form field extension
     mechanism are not the same. The parent type returned in ``getParent()`` is
     what Symfony uses to build and manage the field type. Making the PHP class
-    extend from ``AbstractType`` is only a convenience way of implementing the
+    extend from ``AbstractType`` is only a convenient way of implementing the
     required ``FormTypeInterface``.
 
 Now you can add this form type when :doc:`creating Symfony forms </forms>`::

frontend/encore/postcss.rst

@@ -71,7 +71,8 @@ support. The best-practice is to configure this directly in your ``package.json`
     +  ]
     }
 
-The ``defaults`` option is reccommended for most users and would be equivilant to the following browserslist.
+The ``defaults`` option is recommended for most users and would be equivalent
+to the following browserslist:
 
 .. code-block:: diff