docs: update docs of README.mds.

summary: update command docker compose to docker-compose.

postgresql-pgadmin/README.md

@@ -1,8 +1,10 @@
 ## PostgreSQL and pgAdmin
+
 This example provides a base setup for using [PostgreSQL](https://www.postgresql.org/) and [pgAdmin](https://www.pgadmin.org/).
 More details on how to customize the installation and the compose file can be found [here (PostgreSQL)](https://hub.docker.com/_/postgres) and [here (pgAdmin)](https://www.pgadmin.org/docs/pgadmin4/latest/container_deployment.html).
 
 Project structure:
+
 ```
 .
 ├── .env
@@ -11,7 +13,8 @@ Project structure:
 ```
 
 [_compose.yaml_](compose.yaml)
-``` yaml
+
+```yaml
 services:
   postgres:
     image: postgres:latest
@@ -23,7 +26,9 @@ services:
 ## Configuration
 
 ### .env
+
 Before deploying this setup, you need to configure the following values in the [.env](.env) file.
+
 - POSTGRES_USER
 - POSTGRES_PW
 - POSTGRES_DB (can be default value)
@@ -31,28 +36,33 @@ Before deploying this setup, you need to configure the following values in the [
 - PGADMIN_PW
 
 ## Deploy with docker compose
-When deploying this setup, the pgAdmin web interface will be available at port 5050 (e.g. http://localhost:5050).  
 
-``` shell
-$ docker compose up
+When deploying this setup, the pgAdmin web interface will be available at port 5050 (e.g. http://localhost:5050).
+
+```shell
+$ docker-compose up
 Starting postgres ... done
 Starting pgadmin ... done
 ```
 
 ## Add postgres database to pgAdmin
-After logging in with your credentials of the .env file, you can add your database to pgAdmin. 
+
+After logging in with your credentials of the .env file, you can add your database to pgAdmin.
+
 1. Right-click "Servers" in the top-left corner and select "Create" -> "Server..."
 2. Name your connection
 3. Change to the "Connection" tab and add the connection details:
+
 - Hostname: "postgres" (this would normally be your IP address of the postgres database - however, docker can resolve this container ip by its name)
 - Port: "5432"
 - Maintenance Database: $POSTGRES_DB (see .env)
 - Username: $POSTGRES_USER (see .env)
 - Password: $POSTGRES_PW (see .env)
-  
+
 ## Expected result
 
 Check containers are running:
+
 ```
 $ docker ps
 CONTAINER ID   IMAGE                           COMMAND                  CREATED             STATUS                 PORTS                                                                                  NAMES
@@ -61,8 +71,9 @@ d3cde3b455ee   dpage/pgadmin4:latest           "/entrypoint.sh"         9 minute
 ```
 
 Stop the containers with
-``` shell
-$ docker compose down
+
+```shell
+$ docker-compose down
 # To delete all data run:
-$ docker compose down -v
+$ docker-compose down -v
 ```