fix function names in elixir docs and remove deprecated additional info

[vivianyentran]

DESCRIBE YOUR PR

• Fix for #3213
• Fix references to context function name
• Remove deprecated additional info section

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• [ ] Checked Vercel preview for correctness, including links
• [ ] PR was reviewed and approved by any necessary SMEs (subject matter experts)
• [ ] PR was reviewed and approved by a member of the Sentry docs team

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Name	Status	Preview	Comments	Updated (UTC)
sentry-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 8, 2024 8:15pm

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Bundle Report

Changes will decrease total bundle size by 15 bytes :arrow_down:

Bundle name	Size	Change
sentry-docs-server	8.29MB	6 bytes :arrow_down:
sentry-docs-edge-server	249.71kB	3 bytes :arrow_down:
sentry-docs-client	7.87MB	6 bytes :arrow_down:

[vivianyentran]

@sl0thentr0py Can you help review this?

[lizokm]

@sl0thentr0py gentle nudge to take a look at this when you have a moment please :)

[lizokm]

Thanks so much @sl0thentr0py