Spec: typo in ch. 13.2

[DartBot]

This issue was originally filed by ief...@unipro.ru

---

"T is a parameterized type of the form G < S1 , . . . , Sn >, and and any of
the following conditions hold:"

duplicate "and"

[DartBot]

This comment was originally written by ief...@unipro.ru

---

In the same chapter:

Here is a different example involving malformed types:
interface I<T extends num> {}
interface J {}

class A<T> extends, J, I<T> // type warning: T is not a subtype of num
                  ^
                  |
             extends what? Probably, just replace "extends," -> implements?

[kasperl]

Added Area-Language, Triaged labels.

[gbracha]

Fixed in 0.09 draft

---

Set owner to @gbracha.
Added Done label.