tweak --from-playground docs

[Rich-Harris]

'Svelte Playground' sounds like branding, and we don't describe it that way elsewhere — it's always just 'the playground'. Adding a link eliminates any lingering ambiguity.

Incidentally, the first thing I tried was a URL with a hash fragment:

npx sv create --from-playground=https://svelte.dev/playground/hello-world?version=5.38.10#H4sIAAAAAAAAE22MwQrCMBBEf6XMSUEUr6EI3vwH8RDNFANrUprVKKX_7gY8OqeZN7szI_kH4XCiSO5qniR0K4aoDGtsMERhgTvP0M_Y7how_vs6juO2vCja2NUX_uO3nJRJbQb9fX-o2dTvzFmnfCucTk8uF0s-So0pwA1eCpcv0Qw8IZ4AAAA

This resulted in an error:

zsh: no matches found: --from-playground=(url)

It works if you quote the URL, so I think we should do that in the example

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[svelte-docs-bot]

Preview: https://svelte-dev-git-preview-cli-707-svelte.vercel.app/

[jycouet]

I didn't know, but it seems that zsh has aggressive globbing. So the ? is the root cause of this.

Yes, quoting will help in all shell.

Thx