docs: update otlp.mdx

[luharshekhar2000-dot]

docs: added Middleware in OpenTelemetry file for providing more options to view traces pointer.

Summary by CodeRabbit

• Documentation
  • Updated OTLP integration guide to include Middleware as an additional supported tracing backend example alongside Jaeger, Zipkin, and Dash0.

[github-actions]

All contributors have signed the CLA ✍️ ✅
_{Posted by the CLA Assistant Lite bot.}

[coderabbitai]

📝 Walkthrough

Walkthrough

Documentation update to the OTLP metrics configuration guide, adding Middleware as a supported tracing backend example in Step 4 and ensuring proper file formatting with a trailing newline.

Changes

Cohort / File(s)	Summary
Documentation Updates docs/integrations/metrics/otlp.mdx	Added Middleware to the list of supported tracing backends in the "View Traces" section alongside Jaeger, Zipkin, and Dash0. Fixed file formatting by adding a trailing newline.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• #1854 — Both PRs modify the same "View Traces" list in the OTLP metrics documentation by adding different tracing backend examples.

Poem

🐰 Middleware hops into the trace list with glee,
Alongside Jaeger, Zipkin, and Dash0 to see,
A newline at the end makes the docs complete,
Minor tweaks that make the documentation neat! ✨

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Title check	❓ Inconclusive	The title is vague and generic. It only states 'docs: update otlp.mdx' without conveying what aspect of the documentation was updated or why.	Consider a more descriptive title like 'docs: add Middleware example to OTLP tracing backends' to clearly communicate the specific documentation change.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[luharshekhar2000-dot]

I have read the CLA Document and I hereby sign the CLA

[luharshekhar2000-dot]

recheck