Update documentation for AD Logs

[tdancheva]

Proposed commit message

I updated the documentation for AD Logs regarding eventhub and connection_string settings to avoid confusion with namespace, as a follow-up of an SDH.

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• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.

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• Start Time: 2023-11-29T16:58:10.879+0000

• Duration: 15 min 52 sec

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Name	Metrics % (covered/total)	Diff
Packages	100.0% (10/10)	💚
Files	86.364% (19/22)	👎 -13.636
Classes	86.364% (19/22)	👎 -13.636
Methods	83.333% (155/186)	👍 58.333
Lines	85.021% (2821/3318)	👎 -14.979
Conditionals	100.0% (0/0)	💚

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Hi! We just realized that we haven't looked into this PR in a while. We're sorry! We're labeling this issue as Stale to make it hit our filters and make sure we get back to it as soon as possible. In the meantime, it'd be extremely helpful if you could take a look at it as well and confirm its relevance. A simple comment with a nice emoji will be enough :+1. Thank you for your contribution!

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Package azure - 1.8.1 containing this change is available at https://epr.elastic.co/search?package=azure