Add comment for using configurationMetadataStoreUrl instead of configurationStoreServers (#16012)

Author: ZiyaoWei

pulsar-broker-common/src/main/java/org/apache/pulsar/broker/ServiceConfiguration.java

@@ -144,7 +144,8 @@ public class ServiceConfiguration implements PulsarConfiguration {
         category = CATEGORY_SERVER,
         required = false,
         deprecated = true,
-        doc = "Configuration store connection string (as a comma-separated list)"
+        doc = "Configuration store connection string (as a comma-separated list). Deprecated in favor of "
+                + "`configurationMetadataStoreUrl`"
     )
     @Getter(AccessLevel.NONE)
     @Deprecated

pulsar-functions/runtime/src/main/java/org/apache/pulsar/functions/worker/WorkerConfig.java

@@ -168,7 +168,8 @@ public class WorkerConfig implements Serializable, PulsarConfiguration {
             category = CATEGORY_WORKER,
             required = false,
             deprecated = true,
-            doc = "Configuration store connection string (as a comma-separated list)"
+            doc = "Configuration store connection string (as a comma-separated list). Deprecated in favor of "
+                    + "`configurationMetadataStoreUrl`"
     )
     @Deprecated
     private String configurationStoreServers;

pulsar-proxy/src/main/java/org/apache/pulsar/proxy/server/ProxyConfiguration.java

@@ -98,7 +98,8 @@ public class ProxyConfiguration implements PulsarConfiguration {
     @FieldContext(
         category = CATEGORY_BROKER_DISCOVERY,
         deprecated = true,
-        doc = "Configuration store connection string (as a comma-separated list)"
+        doc = "Configuration store connection string (as a comma-separated list). Deprecated in favor of "
+                + "`configurationMetadataStoreUrl`"
     )
     @Deprecated
     private String configurationStoreServers;

pulsar-websocket/src/main/java/org/apache/pulsar/websocket/service/WebSocketProxyConfiguration.java

@@ -61,7 +61,9 @@ public class WebSocketProxyConfiguration implements PulsarConfiguration {
     @Deprecated
     @FieldContext(
             deprecated = true,
-            doc = "Connection string of configuration store servers")
+            doc = "Configuration store connection string (as a comma-separated list). Deprecated in favor of "
+                    + "`configurationMetadataStoreUrl`"
+    )
     private String configurationStoreServers;
 
     @FieldContext(doc = "Connection string of configuration metadata store servers")