removing stray " from href
removing stray " from href

There was a trailing double quote on the end of this href content.  This removes that character.
tracykteal/datacarpentry.github.io,datacarpentry/datacarpentry.github.io,datacarpentry/datacarpentry.github.io,ErinBecker/datacarpentry.github.io,tracykteal/datacarpentry.github.io,ErinBecker/datacarpentry.github.io,tracykteal/datacarpentry.github.io,datacarpentry/datacarpentry.github.io,tracykteal/datacarpentry.github.io,ErinBecker/datacarpentry.github.io,ErinBecker/datacarpentry.github.io