Since 'ProMotion has been added as a tag, add that tag to 'ProMotion' it...

...self. Also fix name of promotion-template gem to not confuse with ProMotion.

Was on the site, having clicked some other filter (so that no ProMotion stuff was on screen), noticed the tag: 'ProMotion'. Wanting to check it out, I clicked the tag, but only 'ProMotion' the template gem showed up (unfortunately not called 'ProMotion Template'.)