[*] 测试更新目录
[*] update source/chapter_c.rst
[*] Update source/chapter_c
[*] Update chapter_c
[*] Update chapter_c
update chapter 10
update test
Update chapter_10.rst
Update chapter_10.rst
update
Update chapter_02.rst

修改ngx_hash_keys_arrays_t小节错别字
第一次对nginx进行贡献，修改appendix_a.rst中的错别字
Merge pull request #70 from XueliangHan/master

thanks to Xuelianghan
Updated for issue 46
Merge pull request #71 from fanjizhao/master

Upated for issue 46
Merge pull request #69 from ZhangBowen/master

修改ngx_hash_keys_arrays_t小节错别字
Update chapter_02.
a
Update chapter_09.
Update chapter_09.rst