⚡️ Improve Test-WindowsTerminal.ps1

- resolves brianary#99

Author: brianary

Test-WindowsTerminal.ps1

@@ -1,13 +1,25 @@
 <#
 .SYNOPSIS
 Returns true if PowerShell is running within Windows Terminal.
+
+.FUNCTIONALITY
+Windows Terminal
+
+.LINK
+https://aka.ms/terminal-documentation
+
+.EXAMPLE
+Test-WindowsTerminal.ps1
+
+True
 #>
 
 #Requires -Version 7
-[CmdletBinding()] Param()
+[CmdletBinding()][OutputType([bool])] Param()
 if(!$IsWindows) {return $false}
+if($env:WT_SESSION) {return $true}
 for($process = Get-Process -Id $PID; $process; $process = $process.Parent)
 {
-    if($process.ProcessName -eq 'WindowsTerminal') {return $true}
+	if($process.ProcessName -eq 'WindowsTerminal') {return $true}
 }
 return $false