Correct OTel endpointAddress argument (it's not a URL)

[andrejpk]

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Description

The Tracing docs imply that you should use a URL in tracing.otel.endpointAddress but it's looking for a hostname or hostname:port

Issue reference

4068

[msfussell]

@andrejpk - Love this contribution. Any chance you could target this at the v1.13 branch now. This came at a time when we were close to the v1.13 release which is now the current branch

[github-actions[bot]]

Stale PR, paging all reviewers

[hhunter-ms]

hey @andrejpk - second Mark's comment; hopefully that'll get rid of all the extra commits in this PR.

[github-actions[bot]]

Stale PR, paging all reviewers

[hhunter-ms]

Resurrecting this PR - @andrejpk could you reopen this PR and point it to 1.13 instead of 1.12?

[github-actions[bot]]

Stale PR, paging all reviewers

[andrejpk]

Replaced with #4145