「functions.php」の564行目あたりを変更

変更前
function twentyeleven_posted_on() {
printf( __( ‘<span>Posted on </span><a href=”%1$s” title=”%2$s” rel=”bookmark”><time datetime=”%3$s” pubdate>%4$s</time></a><span> <span> by </span> <span><a href=”%5$s” title=”%6$s” rel=”author”>%7$s</a></span></span>’, ‘twentyeleven’ ),

変更後
function twentyeleven_posted_on() {
printf( __( ‘<span>Posted : </span><a href=”%1$s” title=”%2$s” rel=”bookmark”><time datetime=”%3$s” pubdate>%4$s</time></a><span> <span> by </span> <span><a href=”%5$s” title=”%6$s” rel=”author”>%7$s</a></span></span>’, ‘twentyeleven’ ),