fixup! wip: ci

Author: kjdev

.github/extension/BuildPhpExtension/private/Invoke-Build.ps1

@@ -19,7 +19,7 @@ Function Invoke-Build {
 
             echo ">>> $((Get-Location).Path)"
             ls "$((Get-Location).Path)"
-            ls "$((Get-Location).Path)/lz4"
+            ls "$((Get-Location).Path)\lz4"
 
             $builder = "php-sdk\phpsdk-starter.bat"
             $task = [System.IO.Path]::Combine($PSScriptRoot, '..\config\task.bat')