fix: Set compaction on upsert topics in Kafka config

[mbroecheler]

upserted topics should be compacted.

Also fixes a small doc string bug.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 15.95%. Comparing base (b72db80) to head (92ae2f7).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...abase/relational/AbstractJdbcStatementFactory.java	0.00%	1 Missing ⚠️
.../com/datasqrl/engine/log/kafka/KafkaLogEngine.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2184      +/-   ##
============================================
- Coverage     15.95%   15.95%   -0.01%     
  Complexity     1016     1016              
============================================
  Files           619      619              
  Lines         17925    17927       +2     
  Branches       2193     2193              
============================================
  Hits           2860     2860              
- Misses        14782    14784       +2     
  Partials        283      283              

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