Add DeepWiki badge

[MattPoblete]

Updated documentation section with a badge link to auto update documentation on deepwiki.

Description

Add a badge to auto update the documentation on deepwiki

Test plan

Visit https://deepwiki.com/Crossmint/crossmint-sdk to verify the date of the most recent update.

Package updates

README.md

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Latest commit: e605a60

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Pull request overview

This PR adds a DeepWiki badge to the README's Documentation section, enabling automatic documentation updates on the DeepWiki platform. The badge provides a clickable link to the project's DeepWiki page at https://deepwiki.com/Crossmint/crossmint-sdk.

Key Changes

• Adds a DeepWiki badge inline with the Documentation section header

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[Copilot]

[nitpick] The badge is placed inline with the section header, which may affect readability and is not a common Markdown convention. Consider placing the badge on a separate line after the header for better formatting:

## Documentation

<a href="https://deepwiki.com/Crossmint/crossmint-sdk"><img src="https://deepwiki.com/badge.svg" alt="Ask DeepWiki"></a>

Alternatively, use Markdown-style badge syntax for better consistency:

## Documentation

[![Ask DeepWiki](https://deepwiki.com/badge.svg)](https://deepwiki.com/Crossmint/crossmint-sdk)

Suggested change

	## Documentation <a href="https://deepwiki.com/Crossmint/crossmint-sdk"><img src="https://deepwiki.com/badge.svg" alt="Ask DeepWiki"></a>
	## Documentation
	[](https://deepwiki.com/Crossmint/crossmint-sdk)