docs(staged): remove unmatched behavior details

Author: chenjiahan

website/docs/en/guide/cli/staged.mdx

@@ -100,5 +100,3 @@ define.staged({
   '*.{json,md,mdx,css,html}': 'rs fmt',
 });
 ```
-
-When `rs staged` runs an `rs fmt` task, the formatter exits successfully if none of the provided paths match or if all matching files are ignored. Direct `rs fmt` commands remain strict; use [`--no-error-on-unmatched-pattern`](./fmt#--no-error-on-unmatched-pattern) to enable the same behavior in other integrations.

website/docs/zh/guide/cli/staged.mdx

@@ -100,5 +100,3 @@ define.staged({
   '*.{json,md,mdx,css,html}': 'rs fmt',
 });
 ```
-
-当 `rs staged` 运行 `rs fmt` 任务时，如果传入的路径均未匹配或所有匹配文件均被忽略，formatter 会成功退出。直接运行 `rs fmt` 时仍保持严格行为；在其他集成中，可以通过 [`--no-error-on-unmatched-pattern`](./fmt#--no-error-on-unmatched-pattern) 启用相同行为。