Interlanguage links on Templates Wiki are treated differently than on other wikis. The insertion of interlanguage links on individual pages is discouraged as mostly unnecessary. Links to the Japanese and the Chinese versions of this wiki are automatically added to all templates with documentation matching a Japanese or Chinese template.
Instead of inserting interlanguage links directly onto pages, simply verify that Is JA and Is ZH are updated. If you must specify an individual page's link, use parameters of Template:Documentation. If you want to create a Wikia Templates in another language, contact the administrators.
Below is a help page pertaining to use of interlanguage links in general.