Inclusive ranges are not stable, don't tell people to use them

Author: shepmaster

first-edition/src/iterators.md

@@ -16,8 +16,7 @@ call the `.next()` method on repeatedly, and it gives us a sequence of things.
 
 (By the way, a range with two dots like `0..10` is inclusive on the left (so it
 starts at 0) and exclusive on the right (so it ends at 9). A mathematician
-would write "[0, 10)". To get a range that goes all the way up to 10 you can
-write `0...10`.)
+would write "[0, 10)".
 
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