chore: fix missed punctuation in docs

Author: 7-zete-7

docs/extra-services.md

@@ -22,4 +22,4 @@ The currently supported packages are:
 > [!WARNING]
 >
 > We recommend that you use the `composer require` command inside the container
-> in development mode so that recipes can be applied correctly
+> in development mode so that recipes can be applied correctly.

docs/mysql.md

@@ -48,7 +48,7 @@ Change the database image to use MySQL instead of PostgreSQL in `compose.yaml`:
 <!-- markdownlint-enable MD013 -->
 
 Depending on the database configuration,
-modify the environment in the same file at `services.php.environment.DATABASE_URL`
+modify the environment in the same file at `services.php.environment.DATABASE_URL`:
 
 ```yaml
 DATABASE_URL: mysql://${MYSQL_USER:-app}:${MYSQL_PASSWORD:-!ChangeMe!}@database:3306/${MYSQL_DATABASE:-app}?serverVersion=${MYSQL_VERSION:-8}&charset=${MYSQL_CHARSET:-utf8mb4}

docs/options.md

@@ -71,7 +71,7 @@ to inject options block, directive or configuration.
 > [!TIP]
 >
 > All the following environment variables can be defined in your `.env` file
-> at the root of the project to keep them persistent at each startup
+> at the root of the project to keep them persistent at each startup.
 
 <!-- markdownlint-disable MD013 -->