chore: Update tracing.md - Auto-disable when not running in AWS Lambda environment

[hjgraca]

Auto-disable when not running in AWS Lambda environment

Please provide the issue number

Issue number: #543

Summary

Auto-disable when not running in AWS Lambda environment

Changes

Please provide a summary of what's being changed

Add Auto-disable when not running in AWS Lambda environment to docs

User experience

Please share what the user experience looks like before and after this change

Checklist

Please leave checklist items unchecked if they do not apply to your change.

• [x] Meets tenets criteria
• [x] I have performed a self-review of this change
• [ ] Changes have been tested
• [x] Changes are documented
• [x] PR title follows conventional commit semantics

Is this a breaking change?

**RFC issue number**: Checklist: * [ ] Migration process documented * [ ] Implement warnings (if it can live side by side)

Acknowledgment

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

Disclaimer: We value your time and bandwidth. As such, any pull requests created on non-triaged issues might not be successful.

[sonarcloud[bot]]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (7308cc6) 72.23% compared to head (959db8e) 72.11%.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #544 +/- ## =========================================== - Coverage 72.23% 72.11% -0.13% =========================================== Files 101 101 Lines 4106 4106 Branches 418 418 =========================================== - Hits 2966 2961 -5 Misses 1026 1026 - Partials 114 119 +5 ``` | [Flag](https://app.codecov.io/gh/aws-powertools/powertools-lambda-dotnet/pull/544/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/aws-powertools/powertools-lambda-dotnet/pull/544/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None) | `72.11% <ø> (-0.13%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None#carryforward-flags-in-the-pull-request-comment) to find out more.

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