update env var name

[martinatpeek]

No description provided.

[coveralls]

Pull Request Test Coverage Report for Build c8ca2c40dd22594e30c7e830baa7ef0069c0e61c-PR-26

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 2 of 5 (40.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 88.806%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
lib/peek_app_sdk/metrics/client.ex	0	3	0.0%

Totals
Change from base Build 3df13a0f3368aeec9bbe13602d2290c396785496:	0.0%
Covered Lines:	119
Relevant Lines:	134

---

💛 - Coveralls

[coladarci]

I intentionally didn't do this because I didn't want to change all my apps, but thank you.