Changes i18n namespace for errors

app/views/budgets/investments/_ballot.html.erb

@@ -44,7 +44,7 @@
 
     <div class="js-participation-not-allowed" style='display:none'>
       <p>
-        <%= t("votes.budget_investments.#{reason}",
+        <%= t("budgets.ballots.reasons_for_not_balloting.#{reason}",
               verify_account: link_to(t("votes.verify_account"), verification_path),
               signin: link_to(t("votes.signin"), new_user_session_path),
               signup: link_to(t("votes.signup"), new_user_registration_path),