Split out the documentation of the -d option

Since it was mixed up with the image/tag description.

Author: larsw

docs/linux/quickstart-install-connect-docker.md

@@ -90,23 +90,26 @@ Before starting the following steps, make sure that you have selected your prefe
    ```bash
    sudo docker run -e "ACCEPT_EULA=Y" -e "SA_PASSWORD=<YourStrong@Passw0rd>" \
       -p 1433:1433 --name sql1 \
-      -d mcr.microsoft.com/mssql/server:2017-latest
+      -d \
+      mcr.microsoft.com/mssql/server:2017-latest
    ```
    ::: zone-end
 
    ::: zone pivot="cs1-powershell"
    ```PowerShell
    docker run -e "ACCEPT_EULA=Y" -e "SA_PASSWORD=<YourStrong@Passw0rd>" `
       -p 1433:1433 --name sql1 `
-      -d mcr.microsoft.com/mssql/server:2017-latest
+      -d `
+      mcr.microsoft.com/mssql/server:2017-latest
    ```
    ::: zone-end
 
    ::: zone pivot="cs1-cmd"
    ```cmd
    docker run -e "ACCEPT_EULA=Y" -e "SA_PASSWORD=<YourStrong@Passw0rd>" `
       -p 1433:1433 --name sql1 `
-      -d mcr.microsoft.com/mssql/server:2017-latest
+      -d `
+      mcr.microsoft.com/mssql/server:2017-latest
    ```
    ::: zone-end
 
@@ -124,7 +127,8 @@ Before starting the following steps, make sure that you have selected your prefe
    | **-e "SA_PASSWORD=\<YourStrong@Passw0rd\>"** | Specify your own strong password that is at least 8 characters and meets the [SQL Server password requirements](../relational-databases/security/password-policy.md). Required setting for the SQL Server image. |
    | **-p 1433:1433** | Map a TCP port on the host environment (first value) with a TCP port in the container (second value). In this example, SQL Server is listening on TCP 1433 in the container and this is exposed to the port, 1433, on the host. |
    | **--name sql1** | Specify a custom name for the container rather than a randomly generated one. If you run more than one container, you cannot reuse this same name. |
-   | **-d mcr.microsoft.com/mssql/server:2017-latest** | The SQL Server 2017 Linux container image. |
+   | **-d** | Run the container in the background (daemon) |
+   | ** mcr.microsoft.com/mssql/server:2017-latest** | The SQL Server 2017 Linux container image. |
 
 3. To view your Docker containers, use the `docker ps` command.