Update MANIFEST.in (#34138)

Author: singankit

sdk/ai/azure-ai-generative/MANIFEST.in

@@ -6,6 +6,6 @@ include azure/ai/__init__.py
 include azure/ai/generative/py.typed
 include azure/ai/generative/index/_utils/encodings/*
 include azure/ai/generative/evaluate/metrics/templates/*
-recursive-include azure/ai/generative/evaluate/pf_templates/*
+recursive-include azure/ai/generative/evaluate/pf_templates *
 recursive-include azure/ai/generative/synthetic/templates *.txt
 recursive-include azure/ai/generative/synthetic/simulator/templates *.md