Update block_name.rst.inc

Author: webda2l

reference/forms/types/options/block_name.rst.inc

@@ -3,5 +3,6 @@ block_name
 
 **type**: ``string`` **default**: the form's name
 
-Allows you to override the block name used to render display.
-Useful by example if have multiple instances of the same form with differents names and that you need to personalize its render.
+Allows you to override the block name used to render the form type.
+Useful by example if you have multiple instances of the same form with
+different names so that you need to personalize its rendering.