Fix typo in AsyncAdapter and AsyncEnforcer

Co-authored-by: mserico <140243407+mserico@users.noreply.github.com>
diff --git a/README.md b/README.md
index 8d4d049..28dda68 100644
--- a/README.md
+++ b/README.md
@@ -52,7 +52,7 @@
     pass
 ```
 
-> Note that AsyncAdaper must be used for AynscEnforcer.
+> Note that AsyncAdapter must be used for AsyncEnforcer.
 
 ## Alembic Integration