Updated example of creating GEOSGeometry from WKB to use memoryview.

docs/ref/contrib/gis/geos.txt

@@ -55,7 +55,7 @@ are examples of creating the same geometry from WKT, HEX, WKB, and GeoJSON::
     >>> from django.contrib.gis.geos import GEOSGeometry
     >>> pnt = GEOSGeometry('POINT(5 23)') # WKT
     >>> pnt = GEOSGeometry('010100000000000000000014400000000000003740') # HEX
-    >>> pnt = GEOSGeometry(buffer('\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x14@\x00\x00\x00\x00\x00\x007@'))
+    >>> pnt = GEOSGeometry(memoryview(b'\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x14@\x00\x00\x00\x00\x00\x007@')) # WKB
     >>> pnt = GEOSGeometry('{ "type": "Point", "coordinates": [ 5.000000, 23.000000 ] }') # GeoJSON
 
 Another option is to use the constructor for the specific geometry type