Update presubmit.yml

Author: compnerd

.bazelci/presubmit.yml

@@ -101,7 +101,7 @@ tasks:
     batch_commands:
       - echo --- Downloading and installing Swift %SWIFT_VERSION%
       - curl.exe -L https://download.swift.org/swift-%SWIFT_VERSION%-release/windows10/swift-%SWIFT_VERSION%-RELEASE/swift-%SWIFT_VERSION%-RELEASE-windows10.exe -o %TEMP%\installer.exe
-      - start /b /wait %TEMP%\installer.exe /install /passive /norestart & echo %ERRORLEVEL%
+      - start /b /wait %TEMP%\installer.exe /install /passive /norestart /log log.txt & type log.txt
     <<: *windows_common
 
 buildifier: latest