Update about_PowerShell_exe.md to match .exe help

Change paragraph on -File needing to be last parameter if it's for a script to match help output in console for PowerShell.exe.

Author: sqlsauce

reference/5.1/Microsoft.PowerShell.Core/About/about_PowerShell_exe.md

@@ -138,8 +138,9 @@ because it has no special meaning to the current **cmd.exe** shell. The
 **Command** parameter, since there it will be interpreted as PowerShell code.
 
 When the value of **File** is a file path, **File** _must_ be the last
-parameter specified because any characters typed after the command are
-interpreted as the command arguments.
+parameter in the command because any characters typed after the **File**
+parameter name are interpreted as the script file path followed by the script
+parameters.
 
 You can include the script parameters and values in the value of the **File**
 parameter. For example: `-File .\Get-Script.ps1 -Domain Central`