[WIP] Get CI green for guides migration

[arnaucasau]

Part of #1462

This PR prepares our checks for the guides migration to get green CI when we make the change. Changes:

• Added API docs links to ignore.ts. Those links need to be updated from the other repos and from the Box artifacts for historical versions. Once the migration is done we'll have redirects set up for those links as explained here.
• Added some words to the cspell dictionary and fixed other complaints from the checker
• Added a script to fix the Qiskit bot files by changing the paths to guides/. The PR also changes the ignores we had to guides/, leaving the old ones that should be removed once the migration is done.
• Fixed the update_internal_links.py script to switch over more links and consider the migration guides.

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