doc: fix readme

README.md

@@ -8,14 +8,14 @@ a lightweight blog engine written by Rust.
 
 Cause this project is also the tentative staff I try to write something in Rust, it would not include too many features.
 
--[*] Basic Content System without categories
--[ ] Multiple administrators supported
--[*] Administractor management panel
--[*] Article management panel
--[*] Draw supported
--[ ] Customized template
--[ ] RSS supported
--[ ] GraphQL API supported(maybe)
+- [x] Basic Content System without categories
+- [ ] Multiple administrators supported
+- [x] Administractor management panel
+- [x] Article management panel
+- [x] Draw supported
+- [ ] Customized template
+- [ ] RSS supported
+- [ ] GraphQL API supported(maybe)
 
 ## Template