Remove type=global from /spaces api call

[mikecsmith]

Context

Passing the type=global query param in the spaces API call prevents md2conf from being used with knowledge_base spaces.

Note

I did consider allowing the user to pass in the type via a --space-type flag with a default to global but my Python isn't fantastic. That feels like it would be a significant improvement over this PR but may not be necessary.

Contributing

I've read CONTRIBUTING.md and ran check.sh prior to raising the PR.

[hunyadi]

Looking at Confluence REST API v2 documentation for spaces, type doesn't appear to be a required parameter. Originally, functions space_id_to_key and space_key_to_id were eager, and they would fetch all spaces in Confluence, which is why I added the filter to global to ensure we have fewer results. However, I have recently switched to lazy evaluation, with the space key traded to space ID (or vice versa) when necessary, e.g. a page is about to be created, and the space key in the Markdown file has to be exchanged to a space ID. This means that the query response has at most a single result, and we no longer need the filter to global.

[mikecsmith]

Thanks for the context and much appreciated on the fast review/approval. I wasn't sure if the type: "global" had a specific use case but this helps to clear that up.

Brilliant project and thanks for open sourcing it!