Fixed typo in installer link.

Author: Hoyt Koepke

Diff for: scripts/download_and_install.sh

@@ -4,7 +4,7 @@ set -e
 
 VERSION=0.1alpha1
 INSTALLER_PACKAGE=tensorflow_macos-$VERSION.tar.gz
-INSTALLER_PATH=https://github.com/apple/tensorflow_macos/releases/download/$VERSION/$INSTALLER_PACKAGE
+INSTALLER_PATH=https://github.com/apple/tensorflow_macos/releases/download/v$VERSION/$INSTALLER_PACKAGE
 INSTALLER_SCRIPT=install_venv.sh
 
 echo
@@ -16,10 +16,10 @@ if [[ $(uname) != Darwin ]] || [[ $(sw_vers -productName) != macOS ]] || [[ $(sw
 fi
 
 # This 
-echo "Installation script for pre-release tensorflow_macos 0.1alpha0.  Please visit https://github.com/apple/tensorflow_macos "
+echo "Installation script for pre-release tensorflow_macos $VERSION.  Please visit https://github.com/apple/tensorflow_macos "
 echo "for instructions and license information."   
 echo
-echo "This script will download tensorflow_macos 0.1alpha0 and needed binary dependencies, then install them into a new "
+echo "This script will download tensorflow_macos $VERSION and needed binary dependencies, then install them into a new "
 echo "or existing Python 3.8 virtual enviornoment."
 
 # Make sure the user knows what's going on.