[fix][cli] Fix wrong description of pulsar-admin flags (apache#19108)

Signed-off-by: Max Xu <maxs.xu@gmail.com>
Motivation
pulsar-admin sources list has the wrong parameters description.
Modifications
Should be pulsar-admin sources list --namespace <The source's namespace> --tenant <The source's tenant>

pulsar-client-tools/src/main/java/org/apache/pulsar/admin/cli/CmdSources.java

@@ -618,10 +618,10 @@ void runCmd() throws Exception {
      */
     @Parameters(commandDescription = "List all running Pulsar IO source connectors")
     protected class ListSources extends BaseCommand {
-        @Parameter(names = "--tenant", description = "The sink's tenant")
+        @Parameter(names = "--tenant", description = "The source's tenant")
         protected String tenant;
 
-        @Parameter(names = "--namespace", description = "The sink's namespace")
+        @Parameter(names = "--namespace", description = "The source's namespace")
         protected String namespace;
 
         @Override