fix typos

vars/main.yml

@@ -5,4 +5,4 @@ keycloak_pg_host: "{{ KEYCLOAK_DB_HOST|default('localhost') }}"
 keycloak_pg_port: "{{ KEYCLOAK_DB_PORT|default('5432') }}"
 keycloak_pg_db: "{{ KEYCLOAK_PG_DB|default('keycloak') }}"
 postgres_user: "{{ POSTGRES_USER|default('postgres') }}"
-postgres_password: "{{ POSTGRE_PASS|default('postgres') }}"
+postgres_password: "{{ POSTGRES_PASS|default('postgres') }}"