Fix RST error

ker0x · ker0x · commit 20a509ad83ae · 2021-04-02T15:18:36.000+02:00
diff --git a/form/bootstrap5.rst b/form/bootstrap5.rst
@@ -162,9 +162,7 @@ on your Symfony Form ``CheckboxType`` by adding the ``checkbox-switch`` class to
 .. tip::
 
     You can also render your switches inline by simply adding the ``checkbox-inline`` class
-    on the ``label_attr`` option.
-
-    .. code-block:: php
+    on the ``label_attr`` option::
 
         ...
         'label_attr' => [
