Respect the hack

tools/internal_ci/helper_scripts/install_python38.ps1

@@ -2,8 +2,6 @@
 # Install Python 3.8 for x64 and x86 in order to build wheels on Windows.
 
 Set-StrictMode -Version 2
-Set-PSDebug -Trace 2
-# $ErrorActionPreference = 'Stop'
 
 # Avoid "Could not create SSL/TLS secure channel"
 [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
@@ -52,10 +50,13 @@ function Install-Python {
     Write-Host "Python $PythonVersion installed by $PythonInstaller at $PythonInstallPath."
 }
 
+# NOTE(lidiz) Even though the default install folder for Python 32 bit is using
+# "bit", but seems there is a hack in "grpc_build_artifacts.bat" that renames
+# all "32bit" into "32bits".
 $Python38x86Config = @{
     PythonVersion = "3.8.0"
     PythonInstaller = "python-3.8.0.exe"
-    PythonInstallPath = "C:\Python38_32bit"
+    PythonInstallPath = "C:\Python38_32bits"
     PythonInstallerHash = "412a649d36626d33b8ca5593cf18318c"
 }
 Install-Python @Python38x86Config

tools/internal_ci/helper_scripts/prepare_build_windows.bat

@@ -36,7 +36,7 @@ powershell -File src\csharp\install_dotnet_sdk.ps1
 set PATH=%LOCALAPPDATA%\Microsoft\dotnet;%PATH%
 
 @rem Install Python 3.8.0
-powershell -File tools\internal_ci\helper_scripts/install_python38.ps1
+powershell -File tools\internal_ci\helper_scripts\install_python38.ps1
 
 @rem Newest version of Go is required to be able to build boringssl with cmake
 @rem TODO(jtattermusch): try to eliminate the dependency on Go