include the architecture in the windows installer

build_msvc.cmd

@@ -153,7 +153,7 @@ exit /b 0
 :build_installer
 echo ================ building installer
 cd /d %BUILD_DIR%
-"%ProgramFiles%\NSIS\makensis.exe" /DVERSION=%WK_VERSION% /DWK_HASH=%WK_HASH% ..\wkhtmltox.nsi
+"%ProgramFiles%\NSIS\makensis.exe" /DVERSION=%WK_VERSION% /DWK_HASH=%WK_HASH% /DARCH=win32 ..\wkhtmltox.nsi
 cd /d %~dp0
 exit /b 0
 

wkhtmltox.nsi

@@ -2,7 +2,7 @@
 !include "x64.nsh"
 
 Name             "wkhtmltox ${VERSION} (${WK_HASH})"
-OutFile          "static-build\wkhtmltox-${VERSION}_${WK_HASH}.exe"
+OutFile          "static-build\wkhtmltox-${ARCH}_${VERSION}-${WK_HASH}.exe"
 InstallDir       "$PROGRAMFILES\wkhtmltopdf"
 InstallDirRegKey HKLM "Software\wkhtmltopdf" "InstallPath"
 VIProductVersion "${VERSION}.0"