Fixing wrong variable at FreeFileSync post_install script

bucket/freefilesync.json

@@ -27,7 +27,7 @@
       "Saved"
     ],
     "post_install": [
-      "if (!(test-path \"$dir\\Install.dat\")) { Invoke-WebRequest -Uri 'https://bitbucket.org/kunago/scoop-bucket/raw/master/settings/freefilesync/$ver/Install.dat' -OutFile \"$dir\\Install.dat\" }"
+      "if (!(test-path \"$dir\\Install.dat\")) { Invoke-WebRequest -Uri 'https://bitbucket.org/kunago/scoop-bucket/raw/master/settings/freefilesync/$version/Install.dat' -OutFile \"$dir\\Install.dat\" }"
     ],
     "checkver": {
         "url": "https://freefilesync.org/download.php",