Fix a mistake when I updated the wrong title in SUMMARY.md

Author: Kocal

docs/en/SUMMARY.md

@@ -4,9 +4,9 @@
 <!--/email_off-->
 **[Notes de release](https://github.com/vuejs/vue-router/releases)**
 
-- [Installation (En)](installation.md)
+- [Installation](installation.md)
 - Essentiel
-  - [Pour commencer](essentials/getting-started.md)
+  - [Pour commencer (En)](essentials/getting-started.md)
   - [Dynamic Route Matching (En)](essentials/dynamic-matching.md)
   - [Nested Routes (En)](essentials/nested-routes.md)
   - [Programmatic Navigation (En)](essentials/navigation.md)