Fix signal name in OTLP gRPC logs package javadoc

[thswlsqls]

Description

• The package javadoc of io.opentelemetry.exporter.otlp.logs says "sends span data", but the package exports logs.
• Changes that one word to "log data", matching the sibling io.opentelemetry.exporter.otlp.http.logs package.
• The wrong word dates back to Add OTLP logs exporter #3670, which created the logs package by copying the trace package.
• Related: Fix copy-paste leftovers in public API javadoc #8693 fixed the same kind of copy-paste leftover in public API javadoc.

Testing done

• Javadoc-only, test-exempt: no test added.
• ./gradlew :exporters:otlp:all:check — BUILD SUCCESSFUL, 1047 tests passed (13 skipped), 0 failures.
• No signature change, so docs/apidiffs/current_vs_latest/ is unchanged.

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Pull request dashboard status

Merged · refreshed 2026-08-20 14:26 UTC

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.27%. Comparing base (0ae8f33) to head (a00c24d).

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #8737   +/-   ##
=========================================
  Coverage     91.27%   91.27%           
  Complexity    10471    10471           
=========================================
  Files          1006     1006           
  Lines         28276    28276           
  Branches       3568     3568           
=========================================
  Hits          25808    25808           
  Misses         1675     1675           
  Partials        793      793           

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