fix: update lifecycle figure

Author: kazupon

docs/guide/maintenance.md

@@ -4,7 +4,8 @@ Vue I18n and related intlify packages has a lifecycle.
 
 The following is the maintenance status for each version:
 
-<img src="/lifecycle2025.svg" alt="Vue I18n Maintenance Status" />
+<img src="/lifecycle2025-1.svg" alt="Vue I18n Maintenance Status" />
 
 > [!IMPORTANT]
-Vue I18n v8 is no longer supported after 2025. Vue I18n v9 and Vue I18n v10 is in maintenance mode after 2025 July.
+
+Vue I18n v8 has reached EOL and is no longer actively maintained. Vue I18n v9 and Vue I18n v10 is in maintenance mode after 2025 July.