docs: fix printers.md claiming a printer is the last pipeline step

[stijnvanhulle]

🎯 Changes

snippets/how-to/printers.md (included into docs/5.x/guide/going-further/printers.md) opened with "A printer is the last step of Kubb's pipeline." That's wrong: a printer turns one schema node into code inside a plugin's generator, well before the pipeline actually ends. Traced the real order in kubb-labs/kubb:

1. A printer runs per schema node, inside a plugin's generator (plugin-ts/plugin-zod/plugin-faker's printer.nodes).
2. A parser then converts the assembled FileNode into source text (confirmed against packages/parser-ts, which uses the TypeScript compiler's own printer internally to stringify the AST — a different, lower-level "printer" than Kubb's PrinterNodes concept).
3. Storage writes that text to disk.
4. Only after all of that does the CLI run the formatter, linter, and postGenerate commands (packages/cli/src/runners/generate/run.ts's processOutput).

Corrected the opening sentence and added the missing steps after printing, so the page no longer implies printing is the final thing that happens to generated code.

✅ Checklist

• I have followed the steps in the Contributing guide.
• I am using USA English (serialize, color, center, canceled, analyze, license).
• I ran the humanizer check on any new documentation I wrote.

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