Use ImplementationSpecific in ray-cluster.separate-ingress.yaml (#3781) (#3790)

Co-authored-by: Troy Chiu <[email protected]>

Author: MortalHappiness

ray-operator/config/samples/ray-cluster.separate-ingress.yaml

@@ -59,4 +59,4 @@ spec:
             port: # port number should match the port specified for dashboard in the RayCluster setting above
               number: 8265
         path: /raycluster-ingress/(.*) # (.*) is regex
-        pathType: Exact # Matches the URL path exactly and with case sensitivity.
+        pathType: ImplementationSpecific