jpg in markmin autolinks, thanks Villas

gluon/contrib/markmin/markmin2html.py

@@ -543,7 +543,7 @@ def autolinks_simple(url):
     image, video or audio tag
     """
     u_url=url.lower()
-    if u_url.endswith(('jpeg','gif','png')):
+    if u_url.endswith(('jpg','jpeg','gif','png')):
         return '<img src="%s" controls />' % url
     elif u_url.endswith(('mp4','mpeg','mov','ogv')):
         return '<video src="%s" controls></video>' % url