chore: improves OTEL docs a bit

[helio-frota]

Assisted-by: Claude Code

Summary by Sourcery

Refine and clarify the OpenTelemetry documentation by updating section headings, rephrasing instructions, and improving link wording for better readability.

Enhancements:

• Update the traces section header to ‘Enabling Traces’ for consistency
• Rephrase note about metrics-only usage to improve clarity
• Clarify the importer command bullet to explicitly mention enabling traces
• Adjust link wording to include 'the' before Trustify Helm Charts

Documentation:

• Improve grammar and style in docs/otel.md

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Improved clarity and consistency in the OTEL documentation by rephrasing section headings, explanatory notes, and command instructions.

File-Level Changes

Change	Details	Files
Updated section headings and command phrasing for traces	Changed “To enable traces, follow the instructions below” to “Enabling Traces” Rephrased importer command instruction to “To enable traces for the importer”	docs/otel.md
Refined explanatory note and diagrams description	Reworded metrics-only note to specify env vars are “not required” Added “the” before “Trustify Helm Charts” in the diagrams introduction	docs/otel.md

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[sourcery-ai]

Hey there - I've reviewed your changes and they look great!

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[helio-frota]

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 68.46%. Comparing base (e61631e) to head (1fdce95).
⚠️ Report is 6 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2044   +/-   ##
=======================================
  Coverage   68.46%   68.46%           
=======================================
  Files         362      362           
  Lines       20221    20221           
  Branches    20221    20221           
=======================================
  Hits        13845    13845           
  Misses       5586     5586           
  Partials      790      790           

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