fix: add file_read documentation to audit log docu

services/audit/README.md

@@ -10,21 +10,24 @@ file_delete)
    user 'user_id' trashed file 'item_id'
 file_trash_delete)
    user 'user_id' removed file 'item_id' from trashbin
+file_read)
+   user 'user_id' read file 'item_id'
 ```
 
 Example json:
 ```
 {"RemoteAddr":"","User":"user_id","URL":"","Method":"","UserAgent":"","Time":"","App":"admin_audit","Message":"user 'user_id' trashed file 'item_id'","Action":"file_delete","CLI":false,"Level":1,"Path":"path","Owner":"user_id","FileID":"item_id"}
 {"RemoteAddr":"","User":"user_id","URL":"","Method":"","UserAgent":"","Time":"","App":"admin_audit","Message":"user 'user_id' removed file 'item_id' from trashbin","Action":"file_trash_delete","CLI":false,"Level":1,"Path":"path","Owner":"user_id","FileID":"item_id"}
+{"RemoteAddr":"","User":"user_id","URL":"","Method":"","UserAgent":"","Time":"","App":"admin_audit","Message":"user 'user_id' read file 'item_id'","Action":"file_read","CLI":false,"Level":1,"Path":"path","Owner":"user_id","FileID":"item_id"}
 ```
 
 The audit service is not started automatically when running as single binary started via `opencloud server` or when running as docker container and must be started and stopped manually on demand.
 
 The audit service logs:
 
--   File system operations  
-(create/delete/move; including actions on the trash bin and versioning)
--   User management operations  
+- File system operations
+(create/delete/move/read; including actions on the trash bin and versioning)
+- User management operations
 (creation/deletion of users)
--   Sharing operations  
+- Sharing operations
 (user/group sharing, sharing via link, changing permissions, calls to sharing API from clients)