Fix collections import 500s

[ahpook]

Please confirm this pull request meets the following requirements:

• I followed the contributing guidelines: https://github.com/github/explore/blob/main/CONTRIBUTING.md.
• I am not the sole author or employee of a company who created either the topic I am modifying/adding or the collection entry I am modifying/adding.

Which change are you proposing?

• Suggesting edits to an existing topic or collection
• Curating a new topic or collection
• Something that does not neatly fit into the binary options above

The collection rebuild action in biztools 500s when it hits
this file, with no further info available :(

There are a couple of potential failure points I fixed here:
a bare http url instead of https and a org without a repo listed.