UX: Update "get a room" composer message (#14104)

spec/components/composer_messages_finder_spec.rb

@@ -423,7 +423,7 @@ describe ComposerMessagesFinder do
           expect(message).to be_present
           expect(message[:id]).to eq('get_a_room')
           expect(message[:wait_for_typing]).to eq(true)
-          expect(message[:templateName]).to eq('education')
+          expect(message[:templateName]).to eq('get-a-room')
 
           expect(UserHistory.exists_for_user?(user, :notified_about_get_a_room)).to eq(true)
         end