Fix incorrect Swift version number for Collections in Mixed feature

[cbullinger]

Quick fix: Correct version number for Collections in Mixed feature release (should be 10.51.0 instead of 10.15.0)

• Supported Types - Swift SDK
• Define an Object Model- Swift SDK

Release Notes

Swift SDK

• Model Data > Define an Object Model: Correct the SDK version number specified for "Model Unstructured Data" section.
• Model Data > Supported Types: Correct the SDK version number specified for "RealmAny" section.

[github-actions[bot]]

Readability for Commit Hash: 1ee89fcdb0ca64a8e7d16265686095c3e71ae569

You can see any previous Readability scores (if they exist) by looking at the comment's history.

Readability scores for changed documents:

• source/sdk/react-native/model-data/define-a-realm-object-model: Grade Level: 8.7, Reading Ease: 57.37
• source/sdk/react-native/model-data/data-types/mixed: Grade Level: 7.3, Reading Ease: 66.44
• source/sdk/swift/model-data/supported-types: Grade Level: 9.5, Reading Ease: 49.92
• source/sdk/swift/model-data/object-models: Grade Level: 9.6, Reading Ease: 49.72
• source/sdk/node/model-data/define-a-realm-object-model: Grade Level: 8.8, Reading Ease: 57.27

For Grade Level, aim for 8 or below.

For Reading Ease scores, aim for 60 or above:

Score	Difficulty
90-100	Very Easy
80-89	Easy
70-79	Fairly Easy
60-69	Medium
50-59	Fairly Hard
30-49	Hard
0-29	Very Hard

For help improving readability, try Hemingway App.

[docs-builder-bot]

✨ Staging URL: https://preview-mongodbmongodb.gatsbyjs.io/realm/master/

🪵 Logs

• job log: 140f779d554f0471b9a96c99d69d8a04b3289107