update staged docs link

Author: fengmk2

packages/cli/snap-tests-global/migration-lint-staged-merge-fail/snap.txt

@@ -8,7 +8,7 @@ VITE+ - The Unified Toolchain for the Web
 ! Warnings:
   - Failed to merge staged config into vite.config.ts
 → Manual follow-up:
-  - Please add staged config to vite.config.ts manually, see https://viteplus.dev/config/
+  - Please add staged config to vite.config.ts manually, see https://viteplus.dev/guide/migrate#lint-staged
 
 > cat package.json # lint-staged config should be preserved when merge fails
 {

packages/cli/snap-tests-global/migration-lintstagedrc-merge-fail/snap.txt

@@ -8,7 +8,7 @@ VITE+ - The Unified Toolchain for the Web
 ! Warnings:
   - Failed to merge staged config into vite.config.ts
 → Manual follow-up:
-  - Please add staged config to vite.config.ts manually, see https://viteplus.dev/config/
+  - Please add staged config to vite.config.ts manually, see https://viteplus.dev/guide/migrate#lint-staged
 
 > cat package.json # check package.json
 {

packages/cli/src/migration/migrator.ts

@@ -1430,7 +1430,7 @@ function mergeStagedConfigToViteConfig(
       report,
     );
     infoMigration(
-      `Please add staged config to ${displayRelative(fullViteConfigPath)} manually, see https://viteplus.dev/config/`,
+      `Please add staged config to ${displayRelative(fullViteConfigPath)} manually, see https://viteplus.dev/guide/migrate#lint-staged`,
       report,
     );
     return false;