Update platform.ts

Author: SydneyhSmith

src/platform.ts

@@ -73,10 +73,12 @@ export function getDefaultPowerShellPath(
     if (platformDetails.operatingSystem === OperatingSystem.Windows) {
         if (use32Bit) {
             psCoreInstallPath =
-            (platformDetails.isProcess64Bit ? process.env.ProgramW6432 : process.env.ProgramFiles) + "\\PowerShell";
+            (platformDetails.isProcess64Bit ? process.env['ProgramFiles(x86)'] : process.env.ProgramFiles)
+            + "\\PowerShell";
         } else {
 
-            psCoreInstallPath = psCoreInstallPath = process.env.ProgramFiles + "\\PowerShell";
+            psCoreInstallPath =
+            (platformDetails.isProcess64Bit ? process.env.ProgramFiles : process.env.ProgramW6432) + "\\PowerShell";
         }
         if (fs.existsSync(psCoreInstallPath)) {
             const arch = platformDetails.isProcess64Bit ? "(x64)" : "(x86)";