🔒 Check both username and password in security tutorial (#865)

docs/src/security/tutorial007.py

@@ -12,7 +12,7 @@ security = HTTPBasic()
 def get_current_username(credentials: HTTPBasicCredentials = Depends(security)):
     correct_username = secrets.compare_digest(credentials.username, "stanleyjobson")
     correct_password = secrets.compare_digest(credentials.password, "swordfish")
-    if not correct_username and correct_password:
+    if not (correct_username and correct_password):
         raise HTTPException(
             status_code=HTTP_401_UNAUTHORIZED,
             detail="Incorrect email or password",