Merge pull request railsbridge#152 from rearadmiral/teachers_are_here_to

finished incomplete sentence

Author: tjgrathwell

sites/workshop/welcome.deck.md

@@ -80,7 +80,7 @@ We want the community of software developers to reflect the diversity of our soc
 <!SLIDE bullets>
 # Don't be shy!
 * Ask questions!
-* TAs and teachers are here to
+* TAs and teachers are here to help
 
 <!SLIDE bullets>
 # Tools we'll be working with