nixos/meilisearch: fix disabling analytics

      environment = {

        MEILI_DB_PATH = "/var/lib/meilisearch";

        MEILI_HTTP_ADDR = "${cfg.listenAddress}:${toString cfg.listenPort}";

        MEILI_NO_ANALYTICS = toString cfg.noAnalytics;

        MEILI_NO_ANALYTICS = boolToString cfg.noAnalytics;

        MEILI_ENV = cfg.environment;

        MEILI_DUMP_DIR = "/var/lib/meilisearch/dumps";

        MEILI_LOG_LEVEL = cfg.logLevel;