Fix links

ghcup

@@ -1610,10 +1610,10 @@ upgrade() {
             "linux"|"Linux")
                 case "${_arch}" in
                     x86_64|amd64)
-                        _url=https://downloads.haskell.org/~ghcup/x86_64-linux-ghcup
+                        _url=https://downloads.haskell.org/~ghcup/0.1.3/x86_64-linux-ghcup-0.1.3
                         ;;
                     i*86)
-                        _url=https://downloads.haskell.org/~ghcup/i386-linux-ghcup
+                        _url=https://downloads.haskell.org/~ghcup/0.1.3/i386-linux-ghcup-0.1.3
                         ;;
                     *) die "Unknown architecture: ${_arch}"
                         ;;
@@ -1629,7 +1629,7 @@ upgrade() {
                     *) die "Unknown architecture: ${_arch}"
                         ;;
                 esac
-                _url=https://downloads.haskell.org/~ghcup/x86_64-portbld-freebsd-ghcup
+                _url=https://downloads.haskell.org/~ghcup/0.1.3/x86_64-portbld-freebsd-ghcup-0.1.3
                 ;;
             "Darwin"|"darwin")
                 case "${_arch}" in
@@ -1641,7 +1641,7 @@ upgrade() {
                     *) die "Unknown architecture: ${_arch}"
                         ;;
                 esac
-                _url=https://downloads.haskell.org/~ghcup/x86_64-apple-darwin-ghcup ;;
+                _url=https://downloads.haskell.org/~ghcup/0.1.3/x86_64-apple-darwin-ghcup-0.1.3 ;;
             *) die "Unknown platform: ${_plat}"
                 ;;
         esac