fix spelling error

Co-authored-by: Copilot <[email protected]>

Author: compwron

spec/system/volunteers/edit_spec.rb

@@ -129,7 +129,7 @@
 
   describe "updating a volunteer's email" do
     context "with a valid email" do
-      it "updates volunteer email without sending a confirmaiton email" do
+      it "updates volunteer email without sending a confirmation email" do
         organization = create(:casa_org)
         admin = create(:casa_admin, casa_org: organization)
         volunteer = create(:volunteer, :with_assigned_supervisor, casa_org: organization)