Fix #4510 - add note about released in v6 (#4885)

* Fix #4510 - add note about released in v6

* add instructions for finding version

Author: sdwheeler

reference/6/Microsoft.PowerShell.Management/Remove-Service.md

@@ -31,6 +31,8 @@ Remove-Service [-InputObject <ServiceController>] [-WhatIf] [-Confirm] [<CommonP
 
 The `Remove-Service` cmdlet removes a Windows service in the registry and in the service database.
 
+> This cmdlet was added in PowerShell v6.
+
 ## EXAMPLES
 
 ### Example 1: Remove a service
@@ -155,4 +157,3 @@ To run this cmdlet, start PowerShell by using the **Run as administrator** optio
 [Stop-Service](Stop-Service.md)
 
 [Suspend-Service](Suspend-Service.md)
-

reference/7/Microsoft.PowerShell.Management/Remove-Service.md

@@ -31,6 +31,8 @@ Remove-Service [-InputObject <ServiceController>] [-WhatIf] [-Confirm] [<CommonP
 
 The `Remove-Service` cmdlet removes a Windows service in the registry and in the service database.
 
+> This cmdlet was added in PowerShell v6.
+
 ## EXAMPLES
 
 ### Example 1: Remove a service
@@ -155,4 +157,3 @@ To run this cmdlet, start PowerShell by using the **Run as administrator** optio
 [Stop-Service](Stop-Service.md)
 
 [Suspend-Service](Suspend-Service.md)
-

reference/docs-conceptual/how-to-use-docs.md

@@ -25,6 +25,19 @@ Use the version picker at the top of the page to select the version of PowerShel
 
 ![version picker](images/how-to-use-docs/picker-vall.gif)
 
+You can verify the version of PowerShell you are using by inspecting the `$PSversionTable.PSVersion`
+value. The following example shows the output for Windows PowerShell v5.1.
+
+```powershell
+$PSVersionTable.PSVersion
+```
+
+```Output
+Major  Minor  Build  Revision
+-----  -----  -----  --------
+5      1      18362  145
+```
+
 ## Searching for articles
 
 There are two ways to search for content in Docs. The simplest way is to use the filter box under