added min-width 3em to Japanese table; for issue #6

Author: himorin

index.html

@@ -23882,8 +23882,8 @@ <h2 id="terminology">
 <table class="termlist" its-locale-filter-list="ja" lang="ja">
     <thead>
       <tr>
-        <th>用語</th>
-        <th>よみ</th>
+        <th style="min-width: 3em;">用語</th>
+        <th style="min-width: 3em;">よみ</th>
         <th>英語</th>
         <th>定義</th>
       </tr>