Fix editorial nits Pablo found.

2.1/1 In the note at the end of the paragraph, "uses" should be "use".

8.9.1, first bullet: the word "deallocate" should be in code font.

8.10.3/8 "bytes" and "alignment" should be in code font.

8.11.8 Indentation is a bit off:

template <class Key, class T,
..........class Hash = hash<Key>,
..........class Pred = std::equal_to<Key>>
^^^^^^^^^^ This indent is missing

8.11.9 Same indentation issues as 8.11.8