(GH-11332) Fix pager info for built-in help function

Prior to this change, the documentation for the built-in
`help` function in `about_Built-in_Functions` incorrectly
stated that PowerShell always uses `more` for the pager
on Windows and the `PAGER` environment variable on
non-Windows systems.

This change:

- Clarifies that PowerShell uses a default pager for both
  Windows (`more`) and non-Windows (`less`) systems.
- Clarifies that when the `PAGER` environment variable is
  defined, PowerShell uses that command instead of the
  default pager on both Windows and non-Windows systems.
- Fixes AB#297346
- Resolves #11332

reference/5.1/Microsoft.PowerShell.Core/About/about_Built-in_Functions.md

@@ -1,7 +1,7 @@
 ---
 description: Describes the built-in functions in PowerShell.
 Locale: en-US
-ms.date: 06/13/2024
+ms.date: 08/14/2024
 online version: https://learn.microsoft.com/powershell/module/Microsoft.PowerShell.Core/about/about_built-in_functions?view=powershell-5.1&WT.mc_id=ps-gethelp
 schema: 2.0.0
 title: about Built-in Functions
@@ -46,7 +46,7 @@ more information, see [Get-Verb](xref:Microsoft.PowerShell.Core.Get-Verb)
 ## `help`
 
 This function invokes `Get-Help` with your parameters and passes the output to
-the systems pager command, `more.com`.
+the system's pager command, `more.com`.
 
 ## `ImportSystemModules`
 

reference/7.2/Microsoft.PowerShell.Core/About/about_Built-in_Functions.md

@@ -1,7 +1,7 @@
 ---
 description: Describes the built-in functions in PowerShell.
 Locale: en-US
-ms.date: 06/13/2024
+ms.date: 08/14/2024
 online version: https://learn.microsoft.com/powershell/module/microsoft.powershell.core/about/about_built-in_functions?view=powershell-7.2&WT.mc_id=ps-gethelp
 schema: 2.0.0
 title: about Built-in Functions
@@ -41,9 +41,12 @@ The script pauses execution and prompts the user to hit a key to continue.
 ## `help`
 
 This function invokes `Get-Help` with your parameters and passes the output to
-the systems pager command. On Windows systems, the pager is `more.com`. On
-non-Windows systems, `help` uses the pager defined by the `$env:PAGER`
-environment variable.
+the system's pager command. PowerShell uses a different default pager for
+Windows and non-Windows systems. On Windows systems, the default pager is
+`more.com`. On non-Windows systems, the default pager is `less`.
+
+If the `$env:PAGER` environment variable is defined, PowerShell uses the
+specified program instead of the system default.
 
 ## `prompt`
 

reference/7.4/Microsoft.PowerShell.Core/About/about_Built-in_Functions.md

@@ -1,7 +1,7 @@
 ---
 description: Describes the built-in functions in PowerShell.
 Locale: en-US
-ms.date: 06/13/2024
+ms.date: 08/14/2024
 online version: https://learn.microsoft.com/powershell/module/microsoft.powershell.core/about/about_built-in_functions?view=powershell-7.4&WT.mc_id=ps-gethelp
 schema: 2.0.0
 title: about Built-in Functions
@@ -49,9 +49,12 @@ The script pauses execution and prompts the user to hit a key to continue.
 ## `help`
 
 This function invokes `Get-Help` with your parameters and passes the output to
-the systems pager command. On Windows systems, the pager is `more.com`. On
-non-Windows systems, `help` uses the pager defined by the `$env:PAGER`
-environment variable.
+the system's pager command. PowerShell uses a different default pager for
+Windows and non-Windows systems. On Windows systems, the default pager is
+`more.com`. On non-Windows systems, the default pager is `less`.
+
+If the `$env:PAGER` environment variable is defined, PowerShell uses the
+specified program instead of the system default.
 
 ## `prompt`
 

reference/7.5/Microsoft.PowerShell.Core/About/about_Built-in_Functions.md

@@ -1,7 +1,7 @@
 ---
 description: Describes the built-in functions in PowerShell.
 Locale: en-US
-ms.date: 06/13/2024
+ms.date: 08/14/2024
 online version: https://learn.microsoft.com/powershell/module/microsoft.powershell.core/about/about_built-in_functions?view=powershell-7.5&WT.mc_id=ps-gethelp
 schema: 2.0.0
 title: about Built-in Functions
@@ -49,9 +49,12 @@ The script pauses execution and prompts the user to hit a key to continue.
 ## `help`
 
 This function invokes `Get-Help` with your parameters and passes the output to
-the systems pager command. On Windows systems, the pager is `more.com`. On
-non-Windows systems, `help` uses the pager defined by the `$env:PAGER`
-environment variable.
+the system's pager command. PowerShell uses a different default pager for
+Windows and non-Windows systems. On Windows systems, the default pager is
+`more.com`. On non-Windows systems, the default pager is `less`.
+
+If the `$env:PAGER` environment variable is defined, PowerShell uses the
+specified program instead of the system default.
 
 ## `prompt`