chore(readme): add preview

README.md

@@ -3,6 +3,9 @@ A simple yet flexible scratch card system utilizing ox_inventory metadata and Re
 
 **ESX/QB/ND/QBOX supported with bridge**
 
+## Preview
+![image](https://github.com/solareon/slrn_scratchcard/assets/769465/8167930a-caec-4175-af0d-01b45e436802)
+
 ## Installation
 Download the release version or build using `pnpm i` and `pnpm build`. Add the items to your `ox_inventory` configuration and to a shop then restart your server.
 
@@ -59,4 +62,4 @@ This program is free software: you can redistribute it and/or modify it under th
 
 This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 
-You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
+You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.