Improved the docs

docs/installation.md

@@ -10,23 +10,25 @@ You may want to optionally install Stockfish >= 15.1 as it is described in [Play
 
 Clone the `chesslablab/chess-server` repo into your projects folder as it is described in the following example:
 
-```
+```txt
 git clone git@github.com:chesslablab/chess-server.git
 ```
 
 Then `cd` the `chess-server` directory and install the Composer dependencies:
-```
+
+```txt
 composer install
 ```
 
 Create an `.env` file:
-```
+
+```txt
 cp .env.example .env
 ```
 
 Finally, you may want to add the following entry to your `/etc/hosts` file if running the PHP chess server on your localhost along with [React Chess](https://github.com/chesslablab/react-chess) as per the `REACT_APP_WS_HOST` variable defined in the [react-chess/.env.example](https://github.com/chesslablab/react-chess/blob/master/.env.example) file.
 
-```
+```txt
 127.0.0.1       async.chesslablab.org
 ```
 
@@ -54,29 +56,29 @@ php cli/testing.php
 
 Run the simple WebSocket server if you are not using an SSL/TLS certificate.
 
-```
+```txt
 php cli/dev.php
 ```
 
 ### Staging
 
-> Before starting the secure WebSocket server for the first time, make sure to have created the `fullchain.pem` and `privkey.pem` files into the `ssl` folder.
+Before starting the secure WebSocket server for the first time, make sure to have created the `fullchain.pem` and `privkey.pem` files into the `ssl` folder.
 
 Run the staging secure WebSocket server if you don't want to check the website's origin.
 
-```
+```txt
 php cli/staging.php
 ```
 
 This will allow any origin to send a request to it.
 
 ### Production
 
-> Before starting the secure WebSocket server for the first time, make sure to have created the `fullchain.pem` and `privkey.pem` files into the `ssl` folder.
+Before starting the secure WebSocket server for the first time, make sure to have created the `fullchain.pem` and `privkey.pem` files into the `ssl` folder.
 
 Run the secure WebSocket server to check the website's origin as defined in the `WSS_ALLOWED` variable in the `.env.example` file.
 
-```
+```txt
 php cli/prod.php
 ```
 
@@ -88,24 +90,24 @@ Alternatively, the chess server can run on a Docker container.
 
 ### Functional Testing
 
-```
+```txt
 docker compose -f docker-compose.testing.yml up -d
 ```
 
 ### Development
 
-```
+```txt
 docker compose -f docker-compose.dev.yml up -d
 ```
 
 ### Staging
 
-```
+```txt
 docker compose -f docker-compose.staging.yml up -d
 ```
 
 ### Production
 
-```
+```txt
 docker compose -f docker-compose.prod.yml up -d
 ```