Adjust documentation for types tag based on fabpot's review

doc/tags/types.rst

@@ -1,9 +1,9 @@
 ``types``
-=======
+=========
 
-The ``types`` tag declares the types for one or more names variables.
+The ``types`` tag declares the types for template variables.
 
-To do this, specify a :ref:`mapping <twig-expressions>` of names to their types as string constants. 
+To do this, specify a :ref:`mapping <twig-expressions>` of names to their types as strings. 
 
 Here is how you declare that variable ``foo`` is a boolean, while ``bar`` is an integer (see note below):
 
@@ -14,9 +14,7 @@ Here is how you declare that variable ``foo`` is a boolean, while ``bar`` is an
         bar: 'int',
     } %}
 
-You may put these all on one line. However, using one line per variable improves readability.
-
-This tag has no effect on the template's output or runtime behavior.
+By default, this tag does not affect the template compilation or runtime behavior.
 
 Its purpose is to enable designers and developers to document and specify the context's available
 and/or required variables.