Correct Turtle.dot() parameters (#14694)

stdlib/@tests/test_cases/check_turtle.py

@@ -0,0 +1,35 @@
+from turtle import Turtle, dot
+
+Turtle().dot()
+Turtle().dot(10)
+Turtle().dot(size=10)
+Turtle().dot((0, 0, 0))
+Turtle().dot(size=(0, 0, 0))
+Turtle().dot("blue")
+Turtle().dot("")
+Turtle().dot(size="blue")
+Turtle().dot(20, "blue")
+Turtle().dot(20, "blue")
+Turtle().dot(20, (0, 0, 0))
+Turtle().dot(20, 0, 0, 0)
+
+Turtle().dot(size=10, color="blue")  # type: ignore
+Turtle().dot(10, color="blue")  # type: ignore
+Turtle().dot(color="blue")  # type: ignore
+
+dot()
+dot(10)
+dot(size=10)
+dot((0, 0, 0))
+dot(size=(0, 0, 0))
+dot("blue")
+dot("")
+dot(size="blue")
+dot(20, "blue")
+dot(20, "blue")
+dot(20, (0, 0, 0))
+dot(20, 0, 0, 0)
+
+dot(size=10, color="blue")  # type: ignore
+dot(10, color="blue")  # type: ignore
+dot(color="blue")  # type: ignore