Escape term links output in category-template.php functions. Props...

Escape term links output in category-template.php functions. Props SergeyBiryukov, solarissmoke, alex-ye. fixes #20106

git-svn-id: https://core.svn.wordpress.org/trunk@20656 1a063a9b-81f0-0310-95a4-ce76da25c4cd