docs: replace deprecated init subcommand with new in README

[abhicris]

Why

The CLI marks init as deprecated in favour of new:

// crates/solscript-cli/src/main.rs
/// Initialize a new SolScript project (deprecated: use 'new')
Init { ... }

and at runtime prints:

Note: 'init' is deprecated. Use 'solscript new' instead.

But README.md still teaches solscript init my-token in both Quick Start and CLI Reference. New users following the README hit a deprecation notice on their first command.

This swaps the two occurrences to solscript new so the front-door docs match the non-deprecated path. No behaviour change (init internally calls new_project(...) anyway).

Diff: 2 insertions / 2 deletions, README only.

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— Part of open-source frontier Rust work from kcolbchain.com · maintained by Abhishek Krishna.