add missing help test for one metric

Author: chrishagglund-ship-it

conductor-client-metrics/src/main/java/com/netflix/conductor/client/metrics/prometheus/PrometheusApiClientMetrics.java

@@ -57,6 +57,7 @@ public PrometheusApiClientMetrics(PrometheusMeterRegistry registry) {
     public void recordRequest(String method, String uri, int statusCode, Duration duration) {
         String statusLabel = statusCode <= 0 ? "0" : Integer.toString(statusCode);
         Timer.builder("http_api_client_request_seconds")
+                .description("HTTP API client request latency in seconds")
                 .tag("method", nullToEmpty(method))
                 .tag("uri", nullToEmpty(uri))
                 .tag("status", statusLabel)