Rename 1_quickCheck_ja.rst to 1_quickStart_ja.rst

Rename file name and remove a direction for "specifications".
Remove '1_quickStart_ja.rst' temporarily
Add '1_quickStart_ja.rst' again
Fix some no-good translations
Remove the first typo
Merge pull request #8 from Gab-km/update-1_quickStart

Rename 1_quickCheck_ja.rst to 1_quickStart_ja.rst