tip: Add more info to environment variables tip

Author: deadlydog

src/PowerShellTips/2024-05-20-use-get-childitem-to-easily-see-all-environment-variables.ps1

@@ -3,6 +3,8 @@ $tip.CreatedDate = [DateTime]::Parse('2024-05-20')
 $tip.Title = 'Use Get-ChildItem to easily see all environment variables'
 $tip.TipText = @'
 Need to quickly see all of the environment variables on your system? Use the `Get-ChildItem` cmdlet with the `Env:` drive to easily list them all with their values.
+
+Alternatively, you can also use the Environment class functions `GetEnvironmentVariables()` and `GetEnvironmentVariable('EnvironmentVariableName')` to get the same information.
 '@
 $tip.Example = @'
 # List all environment variables and their values.
@@ -14,9 +16,14 @@ dir Env:
 
 # List a specific environment variable. e.g. the PATH environment variable.
 Get-ChildItem Env:Path
+
+# Alternatively, you can use the Environment class functions.
+[Environment]::GetEnvironmentVariables()
+[Environment]::GetEnvironmentVariable('Path')
 '@
 $tip.Urls = @(
 	'https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.management/get-childitem'
+	'https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_environment_variables'
 )
 $tip.Category = [tiPS.TipCategory]::NativeCmdlet # Community, Editor, Module, NativeCmdlet, Performance, Security, Syntax, Terminal, or Other.
 $tip.Author = 'Daniel Schroeder (deadlydog)' # Optional. Get credit for your tip. e.g. 'Daniel Schroeder (deadlydog)'.