update readme

Author: egegunes

Diff for: charts/pg-db/README.md

@@ -231,6 +231,7 @@ The chart can be customized using the following configurable parameters:
 | `patroni.syncPeriodSeconds`                               | The interval for refreshing the leader lock and applying dynamicConfiguration                                                                                                                                       | `10`                                                          |
 | `patroni.leaderLeaseDurationSeconds`                      | TTL of the cluster leader lock                                                                                                                                                                                      | `30`                                                          |
 | `patroni.dynamicConfiguration`                            | Custom PostgreSQL configuration options. Please note that configuration changes are automatically applied to the running instances without validation, so having an invalid config can make the cluster unavailable | `{}`                                                          |
+| `patroni.createReplicaMethods`                  | List of create replica methods in desired order. Operator will update Patroni instance configurations according to its value. If empty operator will add `basebackup` and prepend `pgbackrest` after the initial backup is completed. Valid values: `basebackup`, `pgbackrest`                                                                                            | `[]` |
 | `patroni.dynamicConfiguration.postgresql.parameters`      | Custom PostgreSQL configuration options                                                                                                                                                                             | `{}`                                                          |
 | `patroni.dynamicConfiguration.postgresql.pg_hba`          | PostgreSQL Host-Based Authentication section                                                                                                                                                                        | `{}`                                                          |
 | `patroni.switchover.enabled`                              | Enables or disables manual change of the cluster primary instance                                                                                                                                                   | `""`                                                          |