Fixing params for ofAgentGo and voltha-rw-core images in voltha-scale-measurements

Change-Id: Ic6f687166b9c2941e884b00120c2c9dfd960a2bd
diff --git a/jjb/voltha-scale.yaml b/jjb/voltha-scale.yaml
index 3839d54..798487c 100644
--- a/jjb/voltha-scale.yaml
+++ b/jjb/voltha-scale.yaml
@@ -314,7 +314,7 @@
       - string:
           name: ofAgentImg
           default: '{ofAgentImg}'
-          description: 'Custom image selection for OfAgent (repo:tag)'
+          description: 'Custom image selection for OfAgent (repo:tag), only supports the go version'
 
       - string:
           name: volthaChart
@@ -484,7 +484,7 @@
       - string:
           name: ofAgentImg
           default: '{ofAgentImg}'
-          description: 'Custom image selection for OfAgent (repo:tag)'
+          description: 'Custom image selection for OfAgent (repo:tag), only supports the go version'
 
       - string:
           name: volthaChart