remove one more "/"

[eeliu]

Describe your changes

Fix a bug in fastapi plugins

Checklist before requesting a review

• I have performed a self-review of my code
• If it is a core feature, I have added thorough tests.
• Do we need to implement analytics?
• Will this be part of a product update? If yes, please write one phrase about this update.

[codecov]

Codecov Report

Attention: 107 lines in your changes are missing coverage. Please review.

Comparison is base (9496d50) 76.64% compared to head (e64077a) 78.95%.
Report is 30 commits behind head on dev.

Files	Patch %	Lines
common/src/common.cpp	63.80%	59 Missing ⚠️
common/src/ConnectionPool/TransLayer.h	66.34%	35 Missing ⚠️
common/src/Context/ContextType.h	58.33%	5 Missing ⚠️
common/src/ConnectionPool/TransLayer.cpp	85.18%	4 Missing ⚠️
common/src/Logging.cpp	85.71%	2 Missing ⚠️
common/src/NodePool/PoolManager.cpp	92.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #562      +/-   ##
==========================================
+ Coverage   76.64%   78.95%   +2.30%     
==========================================
  Files          18       18              
  Lines        1032     1074      +42     
==========================================
+ Hits          791      848      +57     
+ Misses        241      226      -15     

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