[ja] Update chapter 1

This change is follow up of #851.
Update 01-chapter9.markdown

Oprava nechcete ignorovat → chcete ignorovat (soubory z .gitignore).
Merge pull request #855 from okuryu/update-ja-chapter1

[ja] Update chapter 1
Merge pull request #856 from ginzel/patch-1

Update 01-chapter9.markdown
Merge branch 'progit/master' into ja