DOCSP-30345: Update Kotlin SDK's Update page

[cbullinger]

Pull Request Info

Update existing Update page with missing content and improved code examples using updated object models

Jira

• https://jira.mongodb.org/browse/DOCSP-30345

Staged Changes

• Update - Kotlin SDK - add missing sections and update code examples
• Delete - Kotlin SDK - small updates
• Supported Types - Kotlin SDK - small updates

Reminder Checklist

If your PR modifies the docs, you might need to also update some corresponding
pages. Check if completed or N/A.

• Create Jira ticket for corresponding docs-app-services update(s), if any
• Checked/updated Admin API
• Checked/updated CLI reference

Review Guidelines

REVIEWING.md

[github-actions]

Readability for Commit Hash: 90bf08d

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

Readability scores for changed documents:

• source/sdk/kotlin/realm-database/schemas/relationships: Grade Level: 11.8, Reading Ease: 44.03
• source/sdk/kotlin/realm-database/schemas/supported-types: Grade Level: 12.1, Reading Ease: 37.81
• source/sdk/kotlin/realm-database/crud/create: Grade Level: 10.6, Reading Ease: 46.98
• source/sdk/kotlin/realm-database/crud/delete: Grade Level: 8.2, Reading Ease: 64.2
• source/sdk/kotlin/realm-database/crud/update: Grade Level: 11.8, Reading Ease: 38.52

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.

[krollins-mdb]

Just a couple minor suggestions! Nice work, @cbullinger!

[krollins-mdb]

"Realmany" sounds like a fantasy country. 😆

[docs-builder-bot]

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

🪵 Logs

• job log: 30e51bdf4813197b0af4b2a9d2311bbe1bc516cb