docs: fix python release docs package registry

[marandaneto]

💡 Motivation and Context

The Python SDK release docs currently say releases publish to crates.io, which is incorrect for this repository. That makes the release process confusing for anyone trying to ship a Python SDK change.

💚 How did you test it?

• Re-read RELEASING.md after the edit to confirm it now references PyPI
• Cross-checked the wording against .github/workflows/release.yml, which publishes posthog and posthoganalytics to PyPI

📝 Checklist

• I reviewed the submitted code.
• I added tests to verify the changes.
• I updated the docs if needed.
• No breaking change or entry added to the changelog.

If releasing new changes

• Ran sampo add to generate a changeset file
• Added the release label to the PR

[greptile-apps]

_{Reviews (1): Last reviewed commit: "docs: fix python release docs package re..." | Re-trigger Greptile}

[github-actions]

posthog-python Compliance Report

Date: 2026-04-16 11:03:34 UTC
Duration: 159969ms

✅ All Tests Passed!

30/30 tests passed

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Capture Tests

✅ 29/29 tests passed

View Details

Test	Status	Duration
Format Validation.Event Has Required Fields	✅	515ms
Format Validation.Event Has Uuid	✅	1506ms
Format Validation.Event Has Lib Properties	✅	1507ms
Format Validation.Distinct Id Is String	✅	1506ms
Format Validation.Token Is Present	✅	1507ms
Format Validation.Custom Properties Preserved	✅	1506ms
Format Validation.Event Has Timestamp	✅	1507ms
Retry Behavior.Retries On 503	✅	9518ms
Retry Behavior.Does Not Retry On 400	✅	3505ms
Retry Behavior.Does Not Retry On 401	✅	3506ms
Retry Behavior.Respects Retry After Header	✅	9514ms
Retry Behavior.Implements Backoff	✅	23527ms
Retry Behavior.Retries On 500	✅	7504ms
Retry Behavior.Retries On 502	✅	7511ms
Retry Behavior.Retries On 504	✅	7509ms
Retry Behavior.Max Retries Respected	✅	23518ms
Deduplication.Generates Unique Uuids	✅	1508ms
Deduplication.Preserves Uuid On Retry	✅	7513ms
Deduplication.Preserves Uuid And Timestamp On Retry	✅	14516ms
Deduplication.Preserves Uuid And Timestamp On Batch Retry	✅	7514ms
Deduplication.No Duplicate Events In Batch	✅	1502ms
Deduplication.Different Events Have Different Uuids	✅	1507ms
Compression.Sends Gzip When Enabled	✅	1506ms
Batch Format.Uses Proper Batch Structure	✅	1507ms
Batch Format.Flush With No Events Sends Nothing	✅	1004ms
Batch Format.Multiple Events Batched Together	✅	1505ms
Error Handling.Does Not Retry On 403	✅	3508ms
Error Handling.Does Not Retry On 413	✅	3508ms
Error Handling.Retries On 408	✅	7511ms

Feature_Flags Tests

✅ 1/1 tests passed

View Details

Test	Status	Duration
Request Payload.Request With Person Properties Device Id	✅	516ms