Updating URL to latest OCP welcome page

Author: pneedle-rh

welcome/index.adoc

@@ -16,13 +16,13 @@ endif::openshift-rosa,openshift-dedicated[]
 ifdef::openshift-rosa[]
 To navigate the {product-title} (ROSA) documentation, use the left navigation bar.
 
-For documentation that is not ROSA-specific, see the link:https://docs.openshift.com/container-platform/4.7/welcome/index.html[OpenShift Container Platform documentation].
+For documentation that is not ROSA-specific, see the link:https://docs.openshift.com/container-platform/latest/welcome/index.html[OpenShift Container Platform documentation].
 endif::[]
 
 ifdef::openshift-dedicated[]
 To navigate the {product-title} documentation, use the left navigation bar.
 
-For documentation that is not specific to {product-title}, see the link:https://docs.openshift.com/container-platform/4.7/welcome/index.html[OpenShift Container Platform documentation].
+For documentation that is not specific to {product-title}, see the link:https://docs.openshift.com/container-platform/latest/welcome/index.html[OpenShift Container Platform documentation].
 endif::[]
 
 ifdef::openshift-enterprise,openshift-webscale,openshift-origin[]