Add missing --allow-roll-forward documentation for dotnet tool commands (#48223)

Author: Copilot

docs/core/tools/dotnet-tool-install.md

@@ -100,7 +100,7 @@ For more information, see [Install a local tool](global-tools.md#install-a-local
 
 - **`--allow-roll-forward`**
 
-  Allow tool to use a newer version of the .NET runtime if the runtime it targets isn't installed.
+  Available starting with .NET 9.0 SDK. Allow tool to use a newer version of the .NET runtime if the runtime it targets isn't installed.
 
 - **`-a|--arch <ARCHITECTURE>`**
 
@@ -207,6 +207,10 @@ For more information, see [Install a local tool](global-tools.md#install-a-local
 
   Installs [dotnetsay](https://www.nuget.org/packages/dotnetsay/) as a global tool with the verbosity of minimal. The default verbosity for global tool is quiet.
 
+- **`dotnet tool install -g dotnetsay --allow-roll-forward`**
+
+  Installs [dotnetsay](https://www.nuget.org/packages/dotnetsay/) as a global tool and allows it to run on newer .NET versions if the target runtime isn't available.
+
 ## See also
 
 - [.NET tools](global-tools.md)

docs/core/tools/dotnet-tool-run.md

@@ -14,7 +14,7 @@ ms.date: 02/14/2020
 ## Synopsis
 
 ```dotnetcli
-dotnet tool run <COMMAND NAME>
+dotnet tool run <COMMAND NAME> [--allow-roll-forward]
 
 dotnet tool run -h|--help
 ```
@@ -31,6 +31,10 @@ The `dotnet tool run` command searches tool manifest files that are in scope for
 
 ## Options
 
+- **`--allow-roll-forward`**
+
+  Available starting with .NET 9.0 SDK. Allow tool to use a newer version of the .NET runtime if the runtime it targets isn't installed.
+
 [!INCLUDE [help](../../../includes/cli-help.md)]
 
 ## Example
@@ -39,6 +43,10 @@ The `dotnet tool run` command searches tool manifest files that are in scope for
 
   Runs the `dotnetsay` local tool.
 
+- **`dotnet tool run dotnetsay --allow-roll-forward`**
+
+  Runs the `dotnetsay` local tool and allows it to run on newer .NET versions if the target runtime isn't available.
+
 ## See also
 
 - [.NET tools](global-tools.md)