Fix the markup of the SIGINT data reference

Author: webknjaz

CHANGES.rst

@@ -16,7 +16,7 @@
 
 - :pr:`350`: Fixed the incarnation of an earlier regression
   of not resetting the serving state
-  on :py:data:``SIGINT`` originally fixed by :pr:`322` and
+  on :py:data:`SIGINT` originally fixed by :pr:`322` and
   :pr:`331` but reintroduced by the changes in :pr:`311`
   -- by :user:`liamstask`.
 

docs/conf.py

@@ -133,6 +133,7 @@
 # NOTE: consider having a separate ignore file
 # Ref: https://stackoverflow.com/a/30624034/595220
 nitpick_ignore = [
+    ('py:data', 'SIGINT'),
     ('py:const', 'socket.SO_PEERCRED'),
     ('py:class', '_pyio.BufferedWriter'),
     ('py:class', '_pyio.BufferedReader'),