[cleanup] Show a FutureWarning for deprecated DataSite.get_item

Change-Id: I22781d1158adf192756f4bb75ffa81c5766716b8
---
M pywikibot/site/__init__.py
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pywikibot/site/__init__.py b/pywikibot/site/__init__.py
index 6c26a71..c5c2717 100644
--- a/pywikibot/site/__init__.py
+++ b/pywikibot/site/__init__.py
@@ -7448,7 +7448,7 @@
             'API wbgetentities response lacks %s key' % props
         return wbdata[props]
 
-    @deprecated('pywikibot.ItemPage', since='20130307')
+    @deprecated('pywikibot.ItemPage', since='20130307', future_warning=True)
     def get_item(self, source, **params):
         """Get the data for multiple Wikibase items."""
         return self._get_item(source, **params)

