Update template.env (#271)

The value in OIDC_ROLES_MAPPING must not be escaped

Author: overcuriousity

template.env

@@ -135,7 +135,7 @@ SYNCSERVERS_1_PULL_RULES=
 # OIDC_CLIENT_ID=
 # OIDC_CLIENT_SECRET=
 # OIDC_ROLES_PROPERTY="roles"
-# OIDC_ROLES_MAPPING="{\"admin\": \"1\"}"
+# OIDC_ROLES_MAPPING="{\"admin\": 1}"
 # OIDC_DEFAULT_ORG=
 # OIDC_LOGOUT_URL=
 # OIDC_SCOPES="[\"profile\", \"email\"]"