[symfony#7220] some minor tweaks

Author: xabbuh

reference/forms/types/entity.rst

@@ -193,10 +193,11 @@ return a ``QueryBuilder``.
 
 .. caution::
 
-    The entity used in the ``FROM`` clause of `query_builder`_ option
-    will always be validated against the class which you have specified with the form's `class`_ option.
-    If you return another entity instead of the one used in your ``FROM`` clause
-    (for instance if you return an entity from a joined table) it will break validation.
+    The entity used in the ``FROM`` clause of the `query_builder`_ option
+    will always be validated against the class which you have specified with
+    the form's `class`_ option. If you return another entity instead of the
+    one used in your ``FROM`` clause (for instance if you return an entity
+    from a joined table), it will break validation.
 
 Overridden Options
 ------------------