Fix some documentation examples involving the repr of a float.
diff --git a/Doc/library/turtle.rst b/Doc/library/turtle.rst
index 759997a..32650a7 100644
--- a/Doc/library/turtle.rst
+++ b/Doc/library/turtle.rst
@@ -875,7 +875,7 @@
        >>> tup = (0.2, 0.8, 0.55)
        >>> turtle.pencolor(tup)
        >>> turtle.pencolor()
-       (0.20000000000000001, 0.80000000000000004, 0.5490196078431373)
+       (0.2, 0.8, 0.5490196078431373)
        >>> colormode(255)
        >>> turtle.pencolor()
        (51, 204, 140)