ref(crons): Simplify example, add async note

[sentrivana]

Pre-merge checklist

If you work at Sentry, you're able to merge your own PR without review, but please don't unless there's a good reason.

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

Description of changes

We'll be adding support for monitoring async functions in https://github.com/getsentry/sentry-python/pull/2912:

• added a note about the minimal version to the main Python crons page
• simplified the examples on the crons page into more digestible code snippets
• added a note to the crons troubleshooting page as well since we had customers asking about this

Direct link to preview:

• https://sentry-docs-git-ivana-python-async-crons.sentry.dev/platforms/python/crons/
• https://sentry-docs-git-ivana-python-async-crons.sentry.dev/platforms/python/crons/troubleshooting/

Extra resources

• Sentry Docs contributor guide

[vercel[bot]]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
sentry-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 2, 2024 11:29am

[codecov[bot]]

Bundle Report

Changes will decrease total bundle size by 9 bytes :arrow_down:

Bundle name	Size	Change
sentry-docs-server	6.11MB	0 bytes
sentry-docs-edge-server	618.05kB	3 bytes :arrow_down:
sentry-docs-client	5.52MB	6 bytes :arrow_down:

[sentrivana]

Will merge as soon as the release is out -- likely sometime this week (EDIT: actually today)