Use GitHub-flavored alert syntax for better docs rendering across GitHub and VitePress

[0xdevalias]

In skimming through the docs in the guide:

• https://github.com/j4k0xb/webcrack/tree/master/apps/docs/src/guide

I noticed that they seem to be using VitePress specific custom containers for info/tip/warning/etc blocks:

• https://vitepress.dev/guide/markdown#custom-containers

That render fine on the website:

• https://webcrack.netlify.app/docs/guide/api.html
  • 

But aren't rendered properly when viewing that documentation on GitHub; eg.

• https://github.com/j4k0xb/webcrack/blob/master/apps/docs/src/guide/api.md#basic-usage
  • 

It seems VitePress also supports GitHub flavoured alerts, that will render the same way, but will also work correctly when viewed on GitHub:

• https://vitepress.dev/guide/markdown#github-flavored-alerts
• https://docs.github.com/en/get-started/writing-on-github/getting-started-with-writing-and-formatting-on-github/basic-writing-and-formatting-syntax#alerts

Fixing this up would improve the readability of this documentation when accessed directly from GitHub.

[0xdevalias]

Also, tangentially related to this, I noticed that the 'API Examples' code-group block's end ::: is below the 'Basic Usage' heading, where I assume it should end before the heading:

webcrack/apps/docs/src/guide/api.md

Lines 1 to 21 in 99caa3a

	# API Examples
	Installation:
	::: code-group
	```bash [npm]
	npm install webcrack
	```
	```bash [yarn]
	yarn add webcrack
	```
	```bash [pnpm]
	pnpm add webcrack --allow-build=isolated-vm
	```
	## Basic Usage
	:::