fixed example with wrong Interchange() incantation

Author: nerdoc

README.md

@@ -77,7 +77,10 @@ Or you can create an EDI interchange on the fly:
 from pydifact.segmentcollection import Interchange
 from pydifact.segments import Segment
 
-interchange = Interchange()
+interchange = Interchange(syntax_identifier=("IBMA",1),
+                          sender="MeMyselfAndIrene",
+                          recipient="TheOtherOne",
+                          control_reference="KLuzs7c6")
 interchange.add_segment(Segment("QTY", ["12", "3"]))
 
 print(interchange.serialize())