docs(udf): update builtin udfs

[aceforeverd]

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

• What is the current behavior? (You can also link to an open issue here)

• What is the new behavior (if this is a feature change)?

[aceforeverd]

standard workflow for udf doc gen is missing though.

[codecov]

Codecov Report

Merging #1939 (6666111) into main (6525d83) will increase coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##               main    #1939   +/-   ##
=========================================
  Coverage     75.77%   75.77%           
  Complexity      347      347           
=========================================
  Files           613      613           
  Lines        117624   117624           
  Branches       1025     1025           
=========================================
+ Hits          89125    89131    +6     
+ Misses        28290    28284    -6     
  Partials        209      209           

Impacted Files	Coverage Δ
src/rpc/rpc_client.h	89.18% <0.00%> (-1.36%)	⬇️
src/sdk/db_sdk.cc	63.49% <0.00%> (-0.46%)	⬇️
src/tablet/tablet_impl.cc	59.40% <0.00%> (-0.23%)	⬇️
src/nameserver/name_server_impl.cc	42.89% <0.00%> (+0.12%)	⬆️
src/zk/zk_client.cc	84.07% <0.00%> (+0.52%)	⬆️
.../query_response_time/deploy_query_response_time.cc	100.00% <0.00%> (+2.89%)	⬆️
...atistics/query_response_time/query_response_time.h	82.60% <0.00%> (+4.34%)	⬆️
...s/query_response_time/deploy_query_response_time.h	100.00% <0.00%> (+18.75%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 482a37d...6666111. Read the comment docs.

[github-actions]

SDK Test Report

  75 files    75 suites   5m 49s ⏱️
163 tests 161 ✔️ 2 💤 0 ❌
204 runs  202 ✔️ 2 💤 0 ❌

Results for commit 6666111.

[github-actions]

HybridSE Linux Test Report

19 076 tests   19 074 ✔️  5m 39s ⏱️
     235 suites           2 💤
       67 files             0 ❌

Results for commit 6666111.

[github-actions]

HybridSE Mac Test Report

19 076 tests   19 074 ✔️  7m 12s ⏱️
     235 suites           2 💤
       67 files             0 ❌

Results for commit 6666111.

[github-actions]

Linux Test Report

       57 files       196 suites   1h 3m 52s ⏱️
  8 968 tests   8 964 ✔️ 4 💤 0 ❌
13 184 runs  13 180 ✔️ 4 💤 0 ❌

Results for commit 6666111.