docs: remove claim that node_modules is not necessary

[tredondo]

This was true for Fresh 1.x. deno run -Ar jsr:@fresh/init creates node_modules.

[CertainLach]

Legacy builder works without node_modules, so is https://github.com/CertainLach/freshpack

Fresh itself supports working without them, the only problem is vite tooling during the compilation

[tredondo]

Since Vite is required, the "no node_modules" claim feels disingenuous now.

Also, most plugins (starting with tailwind) required node_modules.

[lunadogbot]

The change is accurate — the init template sets nodeModulesDir: "manual" in the generated deno.json (packages/init/src/init.ts:563), so a node_modules/ folder is created on first run. The marketing copy claiming "no node_modules" is misleading.

Wording reads naturally with the phrase removed. Thanks!

PR title (docs: …) and scope are good; lockfile untouched. Leaving the merge to a core team member.

[lunadogbot]

deno fmt --check fails on Ubuntu — removing ", no node_modules" leaves the lines short enough that fmt wants to rewrap both www/components/homepage/Hero.tsx:17-18 and www/components/homepage/Simple.tsx:47-48. Running deno fmt locally will fix it.