add required labels to keptn metric

Signed-off-by: Moritz Wiesinger <[email protected]>

docs/content/en/docs/yaml-crd-ref/metric.md

@@ -38,9 +38,9 @@ spec:
 
 ## Fields
 
-* **apiVersion** (required) -- API version being used.
+* **apiVersion** -- API version being used.
 
-* **kind** (required) -- Resource type.
+* **kind** -- Resource type.
    Must be set to `KeptnMetric`.
 
 * **metadata**
@@ -51,7 +51,7 @@ spec:
   * **namespace** -- Namespace of the application using this metric.
 
 * **spec**
-  * **provider.name** --
+  * **provider.name** (required) --
     Name of this instance of the data source
     from which the metric is collected.
     This value must match the value of the `metadata.name` field
@@ -64,9 +64,9 @@ spec:
     as the name of the Prometheus server that monitors the dev deployment
     and `prod-prometheus` as the name of the Prometheus server
     that monitors the production deployment.
-  * **query** -- String in the provider-specific query language,
+  * **query** (required) -- String in the provider-specific query language,
     used to obtain a metric.
-  * **fetchIntervalSeconds** -- Number of seconds between updates of the metric.
+  * **fetchIntervalSeconds** (required) -- Number of seconds between updates of the metric.
   * **range**
     * **interval** -- Timeframe for which the metric would be queried.
     Defaults to 5m.