docs(otlp-grpc-exporter): update default url

[svetlanabrennan]

Signed-off-by: Svetlana Brennan [email protected]

Which problem is this PR solving?

Fix readme to mention that default url is scheme-less.

Short description of the changes

Type of change

Please delete options that are not relevant.

I don't think this update requires additional doc updates.

How Has This Been Tested?

None needed

Checklist:

• Followed the style guidelines of this project
• Documentation has been updated

[codecov]

Codecov Report

Merging #2726 (6f223f5) into main (31380ac) will not change coverage.
The diff coverage is n/a.

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[dyladan]

I think the exporter will not add https. If anything it would be http because the default is not to use secure requests. Will it add any scheme at all?

[svetlanabrennan]

My understanding that the exporter will set "https" if a scheme isn't already provided with the url is based on this code.

I'm still new to this so please correct me if my understanding is wrong. :)

[dyladan]

Looks like your docs are correct but the code is wrong :)

The specification states the default should be http. Honestly in this particular case it doesn't matter because grpc doesn't use the scheme anyway so the information ends up being thrown away.

[svetlanabrennan]

Got it. So you want t leave it as "https" since it's not used anyway?

[dyladan]

I would just remove the "if the provided url is schemeless..." lines

[svetlanabrennan]

I've removed the lines mentioning "if the provided url is schemeless...".