[DOCS] Automates TheHive connector screenshots; edits UI text

[lcawl]

Summary

Relates to #180138

This PR:

• automates the screenshots that appear in https://www.elastic.co/guide/en/kibana/master/thehive-action-type.html
• fixes the capitalization and wording of some UI text and removes unnecessary asterisks
• edits the documentation, for example removing the "Features" section from https://www.elastic.co/guide/en/kibana/master/thehive-action-type.html

Preview

• https://kibana_bk_192506.docs-preview.app.elstc.co/guide/en/kibana/master/thehive-action-type.html

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Metrics [docs]

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
stackConnectors	580.3KB	580.3KB	-6.0B

History

• 💛 Build #233256 was flaky 6672ab3
• 💔 Build #233231 failed 311e879

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