docs: simplify vite-task-client changelog entry (#474)

## Motivation

Keep the changelog entry for `@voidzero-dev/vite-task-client` concise after publishing 0.2.0: retain the `#472` PR link in the existing client entry, but remove the extra feature description that was added for the prefix query change.

Author: wan9chi

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 - **Added** `dependsOn` can now run the specified task in each direct workspace package listed in `dependencies`, `devDependencies`, or `peerDependencies`; for example, `{ "task": "build", "from": ["dependencies", "devDependencies"] }` runs `build` in each direct dependency and dev dependency ([#467](https://github.com/voidzero-dev/vite-task/pull/467), [#469](https://github.com/voidzero-dev/vite-task/pull/469)).
 - **Added** First-party support for caching `vite build` with zero cache config, giving Vite projects correct cache hits out of the box ([vitejs/vite#22453](https://github.com/vitejs/vite/pull/22453)).
-- **Added** [`@voidzero-dev/vite-task-client`](https://npmx.dev/package/@voidzero-dev/vite-task-client), allowing tools to report cache information to Vite Task at runtime so users do not need to configure it manually, including literal-prefix env lookups with `getEnvs({ prefix: "..." })` ([#441](https://github.com/voidzero-dev/vite-task/pull/441), [#454](https://github.com/voidzero-dev/vite-task/pull/454), [#449](https://github.com/voidzero-dev/vite-task/pull/449), [#450](https://github.com/voidzero-dev/vite-task/pull/450), [#458](https://github.com/voidzero-dev/vite-task/pull/458), [#431](https://github.com/voidzero-dev/vite-task/pull/431), [#459](https://github.com/voidzero-dev/vite-task/pull/459), [#472](https://github.com/voidzero-dev/vite-task/pull/472)).
+- **Added** [`@voidzero-dev/vite-task-client`](https://npmx.dev/package/@voidzero-dev/vite-task-client), allowing tools to report cache information to Vite Task at runtime so users do not need to configure it manually ([#441](https://github.com/voidzero-dev/vite-task/pull/441), [#454](https://github.com/voidzero-dev/vite-task/pull/454), [#449](https://github.com/voidzero-dev/vite-task/pull/449), [#450](https://github.com/voidzero-dev/vite-task/pull/450), [#458](https://github.com/voidzero-dev/vite-task/pull/458), [#431](https://github.com/voidzero-dev/vite-task/pull/431), [#459](https://github.com/voidzero-dev/vite-task/pull/459), [#472](https://github.com/voidzero-dev/vite-task/pull/472)).
 - **Changed** Cached tasks now restore automatically tracked output files by default; use `output: []` to disable restoration ([#460](https://github.com/voidzero-dev/vite-task/pull/460), [#461](https://github.com/voidzero-dev/vite-task/pull/461)).
 - **Changed** Environment values in task cache fingerprints are now stored only as SHA-256 digests, and env-related cache miss details report names without values ([#455](https://github.com/voidzero-dev/vite-task/pull/455)).
 - **Fixed** Prefix environment assignments like `PATH=... command` now affect executable lookup during task planning, so tools provided only by the prefixed `PATH` can be resolved correctly ([#440](https://github.com/voidzero-dev/vite-task/pull/440))