Update BigtableTableAdminClient.java

Author: RustedBones

google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BigtableTableAdminClient.java

@@ -654,8 +654,9 @@ public Map<String, List<EncryptionInfo>> apply(com.google.bigtable.admin.v2.Tabl
    *
    * <pre>{@code
    * List<String> tableIds = client.listTables();
+   * System.out.println("Got list of tables:");
    * for(String tableId: tableIds) {
-   *   System.out.println(name.getTable());
+   *   System.out.println(tableId);
    * }
    * }</pre>
    */