Add Documentation of SDC-Helm-Validator container

Issue-ID: SDC-3185
Signed-off-by: Tomasz Wrobel <tomasz.wrobel@nokia.com>
Change-Id: I85972698bb4e0b42694acf1d97980e45cda0d81d
Signed-off-by: Joanna Jeremicz <joanna.jeremicz@nokia.com>
diff --git a/docs/configuration.rst b/docs/configuration.rst
index f839a1f..2438504 100644
--- a/docs/configuration.rst
+++ b/docs/configuration.rst
@@ -81,6 +81,14 @@
             "VnfRepo": {
                 "vnfRepoPort": "8702",
                 "vnfRepoHost": "10.0.14.1"
+            }, 
+            "HelmValidator": {
+                "validator_enabled": true,
+                "helm_version": "3.5.2",
+                "deployable": true,
+                "lintable": false,
+                "strict_lintable": false,
+                "validator_url": "http://sdc-helm-validator:8080/validate"
             }
         },
         "override_attributes": {