Telemetry fix for community registry viewer deployment

[michael-valdron]

What does this PR do?:

Summarize the changes. Are any stacks or samples added or updated?

Corrects the environment variable name for the analytics write key, ANALYTICS_WRITE_KEY to NEXT_PUBLIC_ANALYTICS_WRITE_KEY. This change should fix the broken telemetry.

Which issue(s) this PR fixes:

Link to github issue(s)

fixes devfile/api#1006

PR acceptance criteria:

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  Have you read the devfile registry contributing guide and followed its instructions?
• Test automation
  Does this repository's tests pass with your changes?
• Documentation
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  Have you tested the changes with existing tools, i.e. Odo, Che, Console? (See devfile registry contributing guide on how to test changes)

How to test changes / Special notes to the reviewer:

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: kim-tsao, michael-valdron
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