adding 4.5 docs

Author: vikram-redhat

_distro_map.yml

@@ -107,6 +107,9 @@ openshift-enterprise:
     enterprise-4.4:
       name: '4.4'
       dir: container-platform/4.4
+    enterprise-4.5:
+      name: '4.5'
+      dir: container-platform/4.5
 openshift-dedicated:
   name: OpenShift Dedicated
   author: OpenShift Documentation Project <[email protected]>
@@ -145,4 +148,4 @@ openshift-webscale:
       dir: container-platform-ocp/4.3
     enterprise-4.4:
       name: '4.4'
-      dir: container-platform-ocp/4.4      
+      dir: container-platform-ocp/4.4