Update text/0000-project-groups.md

Co-Authored-By: Mark Rousskov <mark.simulacrum@gmail.com>

Author: XAMPPRocky

text/0000-project-groups.md

@@ -1,6 +1,6 @@
 # Summary
 
-- Formalize project groups as groups dedicated to completing specific projects
+- Formalize project groups as groups dedicated to specific projects
   within the context of a Rust team
 - Project groups are created via an RFC and have a "parent team" (or
   multiple teams)