fix(doc): update EnvResourceDetector specification link

[ymgyt]

update EnvResourceDetector not found link https://github.com/open-telemetry/opentelemetry-specification/tree/master/specification/resource/semantic_conventions#telemetry-sdk

Changes

Please provide a brief description of the changes here.

Merge requirement checklist

• CONTRIBUTING guidelines followed
• Unit tests added/updated (if applicable)
• Appropriate CHANGELOG.md files updated for non-trivial, user-facing changes
• Changes in public API reviewed (if applicable)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (fe2b2d5) 65.5% compared to head (b1af06a) 65.5%.

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #1538   +/-   ##
=====================================
  Coverage   65.5%   65.5%           
=====================================
  Files        140     140           
  Lines      19569   19569           
=====================================
+ Hits       12824   12825    +1     
+ Misses      6745    6744    -1     

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[hdost]

Thank you for the find 👍 small suggestion, not mandatory.

[hdost]

Suggested change

	/// [semantic conventions](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/resource/sdk.md)
	/// [semantic conventions](https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/resource/sdk.md#specifying-resource-information-via-an-environment-variable)

Good to keep an anchor.

[ymgyt]

thanks for suggestion, I have added the anchor.

[shaun-cox]

Thank you!

[cijothomas]

Thanks!
We could run some tool to detect any broken links and do a cleanup to ensure all other links are valid!