fix: use -OutFile instead of ambiguous -o in PowerShell install command

In PowerShell 7.6.0+, the -o shorthand for Invoke-WebRequest is
ambiguous because it matches multiple parameters (-OperationTimeoutSeconds,
-OutFile, -OutVariable, -OutBuffer), causing the install command to fail.

Replace -o with the full -OutFile parameter in all installation
documentation files.

Fixes #3199

Author: ramanvasi

docs/pages/_partials/install-cli.mdx

@@ -63,7 +63,7 @@ curl -L -o devspace "https://github.com/loft-sh/devspace/releases/latest/downloa
 
 ```powershell
 md -Force "$Env:APPDATA\devspace"; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]'Tls,Tls11,Tls12';
-Invoke-WebRequest -URI "https://github.com/loft-sh/devspace/releases/latest/download/devspace-windows-amd64.exe" -o $Env:APPDATA\devspace\devspace.exe;
+Invoke-WebRequest -URI "https://github.com/loft-sh/devspace/releases/latest/download/devspace-windows-amd64.exe" -OutFile $Env:APPDATA\devspace\devspace.exe;
 $env:Path += ";" + $Env:APPDATA + "\devspace";
 [Environment]::SetEnvironmentVariable("Path", $env:Path, [System.EnvironmentVariableTarget]::User);
 ```

docs/versioned_docs/version-4.x/getting-started/installation.mdx

@@ -48,7 +48,7 @@ curl -L -o devspace "https://github.com/loft-sh/devspace/releases/latest/downloa
 
 ```powershell {4}
 md -Force "$Env:APPDATA\loft"; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]'Tls,Tls11,Tls12';
-Invoke-WebRequest -URI "https://github.com/loft-sh/devspace/releases/latest/download/devspace-windows-amd64.exe" -o $Env:APPDATA\loft\devspace.exe;
+Invoke-WebRequest -URI "https://github.com/loft-sh/devspace/releases/latest/download/devspace-windows-amd64.exe" -OutFile $Env:APPDATA\loft\devspace.exe;
 $env:Path += ";" + $Env:APPDATA + "\loft";
 [Environment]::SetEnvironmentVariable("Path", $env:Path, [System.EnvironmentVariableTarget]::User);
 ```

docs/versioned_docs/version-5.x/fragments/install-cli.mdx

@@ -62,7 +62,7 @@ curl -L -o devspace "https://github.com/loft-sh/devspace/releases/latest/downloa
 
 ```powershell {4}
 md -Force "$Env:APPDATA\devspace"; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]'Tls,Tls11,Tls12';
-Invoke-WebRequest -URI "https://github.com/loft-sh/devspace/releases/latest/download/devspace-windows-amd64.exe" -o $Env:APPDATA\devspace\devspace.exe;
+Invoke-WebRequest -URI "https://github.com/loft-sh/devspace/releases/latest/download/devspace-windows-amd64.exe" -OutFile $Env:APPDATA\devspace\devspace.exe;
 $env:Path += ";" + $Env:APPDATA + "\devspace";
 [Environment]::SetEnvironmentVariable("Path", $env:Path, [System.EnvironmentVariableTarget]::User);
 ```