fix(client): doc-test failed introduced by #882

[lxl66566]

Please briefly answer these questions:

• what problem are you trying to solve? (or if there's no problem, what's the motivation for this change?)

  • fix doc test failed introduced by refactor(client)!: Remove request wrappers - KvClient::put #882

• what changes does this pull request make?

  • fix doc test

• are there any non-obvious implications of these changes? (does it break compatibility with previous versions, etc)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.93%. Comparing base (e35b35a) to head (a92a560).
Report is 155 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #902      +/-   ##
==========================================
+ Coverage   75.55%   75.93%   +0.38%     
==========================================
  Files         180      189       +9     
  Lines       26938    28632    +1694     
  Branches    26938    28632    +1694     
==========================================
+ Hits        20353    21742    +1389     
- Misses       5366     5559     +193     
- Partials     1219     1331     +112     

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