Update doc_guidelines.adoc

Author: vikram-redhat

contributing_to_docs/doc_guidelines.adoc

@@ -368,13 +368,7 @@ You must use the .adoc extension in order for the link to work correctly and you
 
 To indicate that a feature is in Technology Preview, include the
 `modules/technology-preview.adoc` file in the feature's assembly to keep the
-supportablity wording consistent across Technology Preview features.
-
-Example:
-====
-:FeatureName: Custom profiles for custom tuning specification 
-include::modules/technology-preview.adoc[]
-====
+supportablity wording consistent across Technology Preview features and provide a value for thee :FeatureName: variable before you include this module.
 
 See
 link:https://github.com/openshift/openshift-docs/pull/13878/files#diff-615ba1bf3b09d11a9c2604b775aa32f2[an