build: restrict the markdown languages to use for code blocks

docs/content/docker.md

@@ -126,7 +126,7 @@ token = {"access_token":...}
 Now create the file named `example.yml` with a swarm stack description
 like this:
 
-```yml
+```yaml
 version: '3'
 services:
   heimdall:
@@ -295,7 +295,7 @@ Each of them should be named after its volume and have at least two
 elements, the self-explanatory `driver: rclone` value and the
 `driver_opts:` structure playing the same role as `-o key=val` CLI flags:
 
-```yml
+```yaml
 volumes:
   volume_name_1:
     driver: rclone
@@ -463,7 +463,7 @@ to inform the docker daemon that a volume is (un-)available.
 As a workaround you can setup a healthcheck to verify that the mount
 is responding, for example:
 
-```yml
+```yaml
 services:
   my_service:
     image: my_image

docs/content/docs.md

@@ -3210,13 +3210,13 @@ at rest or transfer. Detailed instructions for popular OSes:
 
 - Generate and store a password
 
-  ```pwsh
+  ```powershell
   New-Object -TypeName PSCredential -ArgumentList "rclone", (ConvertTo-SecureString -String ([System.Web.Security.Membership]::GeneratePassword(40, 10)) -AsPlainText -Force) | Export-Clixml -Path "rclone-credential.xml"
   ```
 
 - Add the password retrieval instruction
 
-  ```pwsh
+  ```powershell
   [Environment]::SetEnvironmentVariable("RCLONE_PASSWORD_COMMAND", "[System.Runtime.InteropServices.Marshal]::PtrToStringAuto([System.Runtime.InteropServices.Marshal]::SecureStringToBSTR((Import-Clixml -Path "rclone-credential.xml").Password))")
   ```
 

docs/content/faq.md

@@ -260,7 +260,7 @@ the port on the host.
 
 A simple solution may be restarting the Host Network Service with eg. Powershell
 
-```pwsh
+```powershell
 Restart-Service hns
 ```
 

docs/content/install.md

@@ -511,7 +511,7 @@ Instructions
    your local roles-directory
 2. add the role to the hosts you want rclone installed to:
 
-    ```yml
+    ```yaml
     - hosts: rclone-hosts
       roles:
         - rclone
@@ -638,7 +638,7 @@ Example of a PowerShell command that creates a Windows service for mounting
 some `remote:/files` as drive letter `X:`, for *all* users (service will be
 running as the local system account):
 
-```pwsh
+```powershell
 New-Service -Name Rclone -BinaryPathName 'c:\rclone\rclone.exe mount remote:/files X: --config c:\rclone\config\rclone.conf --log-file c:\rclone\logs\mount.txt'
 ```