Fix typo

[a-andre]

Description:

The hyperion changes for NodeMCU introduced a typo. A lower case v has been used while it should have been an upper case V, like in the else branch.

Related issue (if applicable): fixes #13118

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass

[balloob]

Thanks! 🐬