• Add single space where appropriate.
• Rewrap lines.

www/ja/search/searchhints.sgml

• Merge the following from the English version:

1.10 -> 1.11 www/ja/docproj/Makefile
1.17 -> 1.18 www/ja/docproj/submitting.sgml
1.23 -> 1.25 www/ja/tutorials/index.sgml