fix syntax

Author: TimB87

repos.d/crux.yaml

@@ -34,5 +34,5 @@
 {{ crux('3.4', minpackages=1000, valid_till='2020-12-08') }}
 {{ crux('3.5', minpackages=1500, valid_till='2022-09-26') }}
 {{ crux('3.6', minpackages=1500, valid_till='2023-12-31') }}
-{{ crux('3.7', minpackages=1500), valid_till='2025-05-20' }}
+{{ crux('3.7', minpackages=1500, valid_till='2025-05-20') }}
 {{ crux('3.8', minpackages=1500) }}