Update source/release-notes/2.4.txt

added note about $intersects becoming $geoIntersects

Author: monkey101

source/release-notes/2.4.txt

@@ -258,6 +258,11 @@ for ``s2d`` indexes as ``2d`` indexes.
 
 .. operator:: $intersect
 
+.. note::
+
+   In 2.3.2, the :operator:`$intersect` operator will
+   become :operator:`$geoIntersects`
+
    The :operator:`$intersect` selects all indexed points that
    intersect with the provided geometry. (i.e. ``Point``, ``LineString``,
    and ``Polygon``.) You must pass :operator:`$intersect` a document