change variable comment

Signed-off-by: Yuvraj <yuvraj.yad001@gmail.com>

helm/vitess/values.yaml

@@ -14,8 +14,10 @@
 # will be taken from defaults defined below.
 # topology:
 
-# Name of vitess base image
+# Repository for vitess images. Defaults to vitess repo on dockerhub. 
+# Override by specifying the full path of alternate repository, e.g. <give an example>
 repo : vitess
+
 # config will be stored as a ConfigMap and mounted where appropriate
 config:
   # Backup flags will be applied to components that need them.
@@ -389,11 +391,3 @@ orchestrator:
       cpu: 50m
       memory: 350Mi
 
-logtail:
-  image: vitess/logtail
-  tag: helm-1.0.6
-
-logrotate:
-  image: vitess/logrotate
-  tag: helm-1.0.6
-