adding Mallorca event link to the pandas sprint page

Author: datapythonista

pandas/index.html

@@ -228,7 +228,7 @@ <h3 class="section-title">Locations</h3>
                              "lng": -122.349252},
                             {"title": "Mallorca",
                              "description": "PyData Mallorca",
-                             "url": "https://www.meetup.com/PyData-Mallorca/",
+                             "url": "https://www.meetup.com/PyData-Mallorca/events/247783856/",
                              "lat": 39.567545,
                              "lng": 2.648213},
                             {"title": "Mannheim",