Fix examples for dbt deps --add-package

[dbeatty10]

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What are you changing in this pull request and why?

Fixing the code examples per dbt-labs/dbt-core#9076 by using test examples from dbt-labs/dbt-core#8408

Checklist

• Review the Content style guide and About versioning so my content adheres to these guidelines.
• I've checked that the code examples work
• I've confirmed that the preview renders correctly

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Name	Status	Preview	Comments	Updated (UTC)
docs-getdbt-com	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 15, 2023 9:40pm

[seub]

Thank you for creating this PR @dbeatty10.

While you're on this, the doc mentions:

You can run dbt deps --lock to update the package-lock.yml with the most recent dependencies from packages

I could be wrong, but by glancing at the code, it seems to me that this is inaccurate. The correct statement should be along the lines of:

You can pass the flags:
--lock: Create or replace the lock file if it does not exist or if packages.yml has changed, and stop (do not install the packages).
--upgrade: Create or replace the lock file with the latest compatible versions, and install the packages unless the flag --lock is also passed.

Note: I actually like this "actual behavior" better than the behavior implied by the documentation. However, I don't see the need for both the flags --dry-run and --lock, they could be merged into a same flag as far as I can tell.

There is also a typo "depenedencies.yml" on the page.

[matthewshaver]

Thank you @dbeatty10

[dbeatty10]

@seub thanks for taking a look at this PR and making these suggestions 🏆

@mirnawong1 fixed the spelling of "dependencies" within 5e17f75.

I've opened this issue to consider your other suggestions: #4481

[dbeatty10]

@seub also opened this feature request as well: dbt-labs/dbt-core#9100

[seub]

Thank you @dbeatty10 ! 🙏