Fix model download links error of some model

[hhaAndroid]

Motivation

Fix model download links error of some model.

• FCOS
• VFNet
• YOLACT
• CRPN
• SCNet
• DeepFashion

[codecov]

Codecov Report

Merging #6069 (9ed7e49) into master (db85fd1) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #6069   +/-   ##
=======================================
  Coverage   61.44%   61.44%           
=======================================
  Files         304      304           
  Lines       23855    23855           
  Branches     3942     3942           
=======================================
+ Hits        14657    14658    +1     
  Misses       8415     8415           
+ Partials      783      782    -1     

Flag	Coverage Δ
unittests	61.42% <ø> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
mmdet/core/bbox/assigners/max_iou_assigner.py	73.68% <0.00%> (+1.31%)	⬆️

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