Fixes 14132: add .alert-dismissible to docs examples
Fixes 14132: add .alert-dismissible to docs examples

BS3 commits: d9a38cd99f3346a7565bf31cb9143755158c8219

todc/todc-bootstrap,up2vs/todc-bootstrap,2947721120/googlebt4,ztx1491/todc-bootstrap,todc/todc-bootstrap,2947721120/todc-bootstrap,todc/todc-bootstrap,aaroncnhk/todc-bootstrap,mozillo/todc-bootstrap