docs: update copyright year

Author: claudiocro

docs/README.md

@@ -4,11 +4,11 @@ heroImage: ./panter-logo.png
 actionText: Get Started
 actionLink: introduction.md
 features:
-- title: Easy
-  details: You can introduce internationalization into your app with based on i18-next
-- title: Powerful
-  details: In addition to simple translation, support localization such as pluralization, number, datetime ... etc
-- title: Component-oriented
-  details: You can manage locale messages on single file component
-footer: MIT Licensed | Copyright © 2018 panter ag
+  - title: Easy
+    details: You can introduce internationalization into your app with based on i18-next
+  - title: Powerful
+    details: In addition to simple translation, support localization such as pluralization, number, datetime ... etc
+  - title: Component-oriented
+    details: You can manage locale messages on single file component
+footer: MIT Licensed | Copyright © 2019 panter ag
 ---