dd-agent: fix multiple tags in the config file

Changed files
+1 -1
nixos
modules
services
monitoring
dd-agent
+1 -1
nixos/modules/services/monitoring/dd-agent/dd-agent.nix
···
# proxy_password: password
# tags: mytag0, mytag1
-
${optionalString (cfg.tags != null ) "tags: ${concatStringsSep "," cfg.tags }"}
# collect_ec2_tags: no
# recent_point_threshold: 30
···
# proxy_password: password
# tags: mytag0, mytag1
+
${optionalString (cfg.tags != null ) "tags: ${concatStringsSep ", " cfg.tags }"}
# collect_ec2_tags: no
# recent_point_threshold: 30