Update install instructions (#10)

docs/scenarios/install-instructions.md

@@ -2,36 +2,40 @@
 
 ## Prerequisites
 
-A separate `PSRule` module is required for `PSRule.Rules.Kubernetes` to work. The required version will automatically be installed along-side `PSRule.Rules.Kubernetes` when using `Install-Module` or `Update-Module` cmdlets.
-
 - Windows PowerShell 5.1 with .NET Framework 4.7.2+ or
 - PowerShell Core 6.0 or greater on Windows, macOS and Linux
 
 For a list of platforms that PowerShell Core is supported on [see](https://github.com/PowerShell/PowerShell#get-powershell).
 
+The following modules are required for `PSRule.Rules.Kubernetes` to work:
+
+- PSRule
+
+The required version of each module will automatically be installed along-side `PSRule.Rules.Kubernetes` when using `Install-Module` or `Update-Module` cmdlets.
+
 ## Getting the modules
 
-Install from [PowerShell Gallery][psg] for all users (requires permissions)
+Install from [PowerShell Gallery][module] for all users (requires permissions):
 
 ```powershell
-# Install PSRule module
-Install-Module -Name 'PSRule.Rules.Kubernetes';
+# Install module
+Install-Module -Name 'PSRule.Rules.Kubernetes' -Repository PSGallery;
 ```
 
-Install from [PowerShell Gallery][psg] for current user only
+Install from [PowerShell Gallery][module] for current user only:
 
 ```powershell
-# Install PSRule module
-Install-Module -Name 'PSRule.Rules.Kubernetes' -Scope CurrentUser;
+# Install module
+Install-Module -Name 'PSRule.Rules.Kubernetes' -Repository PSGallery -Scope CurrentUser;
 ```
 
-Save for offline use from PowerShell Gallery
+Save for offline use from PowerShell Gallery:
 
 ```powershell
-# Save PSRule module, in the .\modules directory
+# Save module, in the .\modules directory
 Save-Module -Name 'PSRule', 'PSRule.Rules.Kubernetes' -Path '.\modules';
 ```
 
 > For pre-release versions the `-AllowPrerelease` switch must be added when calling `Install-Module` or `Save-Module`.
 
-[psg]: https://www.powershellgallery.com/packages/PSRule.Rules.Kubernetes
+[module]: https://www.powershellgallery.com/packages/PSRule.Rules.Kubernetes