(bugfix): fixed readme code block

README.md

@@ -25,8 +25,9 @@ A C# application designed to facilitate backup and restore operations to an LTO
    ```
 2. Ensure `.NET8 SDK` is installed on your system.
 3. Prepare a `configuration.json` file in the application directory with the following structure:
-   ```json
-  {
+
+```json
+{
   "TapePath": "\\\\.\\Tape0",
   "WriteDelay": 100,
   "Backups": [
@@ -66,8 +67,8 @@ A C# application designed to facilitate backup and restore operations to an LTO
       }
     }
   ]
-  }
-   ```
+}
+```
 
 ## Usage