Added TOC (#2)

#1

Co-authored-by: Mácio Fernandes <marcio.fernandes@outlook.pt>
Reviewed-on: #2

README.md

@@ -1,5 +1,13 @@
 # Gitea
 
+- [Gitea](#gitea)
+  - [Links](#links)
+  - [Backup And Restore](#backup-and-restore)
+    - [Gitea dump from docker host](#gitea-dump-from-docker-host)
+  - [Other References](#other-references)
+
+## Links
+
 - [Homepage](https://gitea.io/)
 - [Documentation](https://docs.gitea.io)
 - [API](https://try.gitea.io/api/swagger)