Use Japanese localized version of trademarks.ent.

release/doc/ja_JP.eucJP/early-adopter/article.sgml

@@ -17,6 +17,9 @@
 <!ENTITY % ja-mailing-lists PUBLIC "-//FreeBSD//ENTITIES DocBook Mailing List Entities//JA">
 %ja-mailing-lists;
 
+<!ENTITY % ja-trademarks PUBLIC "-//FreeBSD//ENTITIES DocBook Trademark Entities//JA">
+%ja-trademarks;
+
 <!ENTITY % trademarks PUBLIC "-//FreeBSD//ENTITIES DocBook Trademark Entities//EN">
 %trademarks;