docs: update invalid link (#6698)

Author: kamontat

docs/config/index.md

@@ -580,7 +580,7 @@ Base directory to scan for the test files. You can specify this option to speed
 - **Default:** `'default'`
 - **CLI:** `--reporter=<name>`, `--reporter=<name1> --reporter=<name2>`
 
-Custom [reporters](/guide/reporters) for output. Reporters can be [a Reporter instance](https://github.com/vitest-dev/vitest/blob/main/packages/vitest/src/types/reporter.ts), a string to select built-in reporters, or a path to a custom implementation (e.g. `'./path/to/reporter.ts'`, `'@scope/reporter'`).
+Custom [reporters](/guide/reporters) for output. Reporters can be [a Reporter instance](https://github.com/vitest-dev/vitest/blob/main/packages/vitest/src/node/types/reporter.ts), a string to select built-in reporters, or a path to a custom implementation (e.g. `'./path/to/reporter.ts'`, `'@scope/reporter'`).
 
 ### outputFile<NonProjectOption />