chore: add outcomes_enabled variable to example env

Author: emmanuel-musau

govtool/frontend/.env.example

@@ -7,7 +7,7 @@ VITE_GTM_ID=""
 VITE_IS_DEV=true
 VITE_USERSNAP_SPACE_API_KEY=""
 VITE_IS_PROPOSAL_DISCUSSION_FORUM_ENABLED='true'
-VITE_IS_GOVERNANCE_OUTCOMES_PILLAR_ENABLED=true
+VITE_IS_GOVERNANCE_OUTCOMES_PILLAR_ENABLED='true'
 VITE_PDF_API_URL=""
 VITE_IPFS_GATEWAY=""
 VITE_IPFS_PROJECT_ID=""