Update README.md again

Author: Ellet

README.md

@@ -81,6 +81,7 @@ Compatible versions:
 
 | flutter_quill           | flutter_quill_extensions | flutter_quill_test      |
 |-------------------------|--------------------------|-------------------------|
+| 8.5.1                   | 0.6.7                    | 0.0.5                   |
 | 8.5.0                   | 0.6.7                    | 0.0.5                   |
 
 Theses versions are tested and well supported, you shouldn't get a build failure