Use backticks

Michael Lenahan · Michael Lenahan · commit c7ad1bc9ea9c · 2017-04-13T13:50:56.000+02:00
diff --git a/reference/forms/types/options/choice_value.rst.inc b/reference/forms/types/options/choice_value.rst.inc
@@ -11,8 +11,8 @@ configure the value that will be sent in the API request).
 This can be a callable or a property path. See `choice_label`_ for similar usage.
 If ``null`` is used, an incrementing integer is used as the name.
 
-If you are using a callable to populate choice_value, you need to check for the
-case that the value of the field may be null.
+If you are using a callable to populate ```choice_value```, you need to check
+for the case that the value of the field may be ```null```.
 
 .. caution::
 
