Tweak windows message, fix #362

src/html/modals/windows-drivers.pug

@@ -9,6 +9,9 @@
         p
           | You need to install the #[a(onclick="openurl.open('https://adb.clockworkmod.com/')") Universal ADB driver] and re-start the program to continue with the installation.
           | If you have already installed adb drivers, you can dismiss this message and simply continue with the installation.
+          br
           | If installer still does not detect you device, you might want to try installing   #[a(onclick="openurl.open('https://developer.android.com/studio/releases/')") Android Studio] from Google. After that, you can specify custom adb and fastboot tools in the options in the next step.
+          br
+          | Please note that the UBports Installer is still somewhat unstable on Windows. If the installation does not work on this machine and you have access to a Linux computer, you might want to try your luck there.
       .modal-footer
         button.btn.btn-default(type='button', data-dismiss='modal') Continue