Update ipyleaflet/geoportal.py

Co-authored-by: David Brochart <david.brochart@gmail.com>

Author: HaudinFlorence

ipyleaflet/geoportal.py

@@ -42,7 +42,7 @@ class GeoportalSearchEngine(Control):
     """GeoportalSearchEngine class, with Control as parent class
 
     Attributes
-        ----------
+    ----------
     """
 
     _view_name = Unicode("LeafletGeoportalSearchEngineView").tag(sync=True)