PEP 572: Fix extra "than" typo (#734)

Harmon758 · gvanrossum · commit c39a17cf1175 · 2018-07-10T17:43:29.000-07:00
diff --git a/pep-0572.rst b/pep-0572.rst
@@ -373,7 +373,7 @@ found in assignment statements:
 
     x = y = z = 0  # Equivalent: (z := (y := (x := 0)))
 
-- Single assignment targets other than than a single ``NAME`` are
+- Single assignment targets other than a single ``NAME`` are
   not supported::
 
     # No equivalent
