Update the KeyboardAvoidingView component

[ayushjainrksh]

Fixes MLH-Fellowship#47

Summary

The PR is part of an effort to update the code comments to match the current documentation on the React Native website. The project is a part of MLH fellowship program and involves automatic generation of the website docs from code comments and flow types as the end result.

To learn more about the project you can visit the project wiki:

• Project details
• RN Docs Standards

Link to the documentation(the source of truth):

• keyboardavoidingview.md

Changes

• Update the title and prop description from docs.
• Remove unnecessary * from the code comments.
• Add Snack player example specified in the docs to the code comments.
• Remove default values from description and add it to @default annotation.
• Cap comments to 80 characters.

Changelog

[Internal]

Test Plan

All changes are made to the code comments and thus there is no need for testing.

Reviewed by @jevakallio

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
ios	-	universal	829440	n/a

Base commit: 499b021

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	6,760,785	-352,108
android	hermes	armeabi-v7a	6,423,738	-339,704
android	hermes	x86	7,147,287	-383,662
android	hermes	x86_64	7,037,183	-382,893
android	jsc	arm64-v8a	8,934,366	-338,059
android	jsc	armeabi-v7a	8,589,686	-325,425
android	jsc	x86	8,763,984	-354,579
android	jsc	x86_64	9,339,498	-354,388

Base commit: 499b021

[charlesbdudley]

Thanks for this contribution, @ayushjainrksh, and apologies for not getting around to it until now. This MLH-Fellowship project is not currently being worked on so we're going to close this PR to focus on active ones. If you feel this is an error or if you'd like to pick this up again, please let me know!