adding in includeLocs field

Author: Andrew Leung

draft/applications/geospatial-indexes.txt

@@ -525,6 +525,7 @@ For example, to return all documents with the value
    :ref:`Spherical queries <geospatial-spherical-representation>` are
    not currently supported by haystack indexes.
 
+.. _geospatial-multi-location:
 
 Multi-location Documents
 ------------------------
@@ -591,6 +592,10 @@ in the following example:
 
    db.records.ensureIndex( { "addresses.loc": "2d" } )
 
+To include the location field with the distance field in
+multi-location document queries, specify ``includeLocs: true`` field
+in the :dbcommand:`geoNear`.
+
 .. the following is a section about the limitations of geospatial
    indexes in sharding: