No module named 'ftx.medical' in spacy/spacy_processors.py

[Xuezhi-Liang]

Describe the bug
This bug occurs when running the forte blog_post_example. Just because refactor the forte medical module.
So need to modify

from ftx.medical import MedicalEntityMention, UMLSConceptLink

to

from ftx.onto.clinical import MedicalEntityMention, UMLSConceptLink

in spacy/spacy_processors.py
To Reproduce
Steps to reproduce the behavior:

1. P epare data ...
2. R n command '....'
3. S e error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots

Environment (please complete the following information):

• OS: [e.g. iOS]
• Version [e.g. 22]
• Python and Package verions: [e.g. Python version, Pytorch version]

Additional context
Add any other context about the problem here.

[hunterhector]

close since duplicated with #87