fix: python template task.json wrong path

[qinzhouxu]

https://msazure.visualstudio.com/Microsoft%20Teams%20Extensibility/_workitems/edit/36981534

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.29%. Comparing base (e3e8586) to head (d93f594).
⚠️ Report is 2 commits behind head on release/6.6.

Additional details and impacted files

@@               Coverage Diff               @@
##           release/6.6   #15442      +/-   ##
===============================================
- Coverage        89.29%   89.29%   -0.01%     
===============================================
  Files              620      620              
  Lines            38073    38073              
  Branches          7732     7553     -179     
===============================================
- Hits             33998    33996       -2     
- Misses            1973     1974       +1     
- Partials          2102     2103       +1     

see 2 files with indirect coverage changes

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