fix smpl import

Author: APN-Pucky

pyfeyn2/feynmandiagram.py

@@ -14,7 +14,7 @@
 from feynml import Styled as Styled_
 from feynml import Vertex as Vertex_
 from feynml.momentum import Momentum as Momentum_  # TODO fix to feynml only
-from smpl.doc import deprecated
+from smpl_doc.doc import deprecated
 
 
 class Head(Head_):

pyfeyn2/interface/hepmc.py

@@ -1,6 +1,6 @@
 """Moved to :py:mod:`feynml.interface.hepmc`"""
 from feynml.interface.hepmc import hepmc_event_to_feynman as _event_to_feynman
-from smpl.doc import deprecated
+from smpl_doc.doc import deprecated
 
 event_to_feynman = deprecated(
     "2.2.6", "Directly use feynml.interface.hepmc.event_to_feynman()"

pyfeyn2/interface/qgraf.py

@@ -1,6 +1,6 @@
 """Moved to :py:mod:`feynml.interface.qgraf`"""
 from feynml.interface.qgraf import get_style as _get_style
-from smpl.doc import deprecated
+from smpl_doc.doc import deprecated
 
 get_style = deprecated("2.2.6", "Directly use feynml.interface.qgraf.get_style()")(
     _get_style