README.md updated.

Author: rom8726

README.md

@@ -31,8 +31,8 @@ Keepalived VIP -> HAProxy -> PgBouncer -> PostgreSQL
 - Postgres Exporter (PostgreSQL metrics)
 
 ## Quick Start
-1. Clone this repository:
-2. Create config files with the command `make init`
+1. Clone this repository.
+2. Create config files with the command `make init`.
 3. Update `inventory.ini` with your servers:
 ```ini
 [promoters]
@@ -43,7 +43,7 @@ patroni3 ansible_host=192.168.64.4 node_id=3
 4. Update `ansible.cfg` with your user (root by default).
 5. Set variable `cluster_vip_1` in group_vars (some VIP address for keepalived).
 6. Set variable `keepalived_vip_interface` in keepalived default vars.
-7. Run the playbooks:
+7. Run the playbook:
 ```shell
 # Deploy Patroni cluster
 make up