fix(matrix): Fix yaml typo

apps/base/matrix/database.yaml

@@ -50,7 +50,7 @@ spec:
       - name: "DATA_SOURCE_PASS"
         value: "$(POSTGRES_PASSWORD)"
       - name: "PG_EXPORTER_AUTO_DISCOVER_DATABASES"
-        value "true"
+        value: "true"
 ---
 apiVersion: monitoring.coreos.com/v1
 kind: PodMonitor