fix markdownlint errors

Author: jasonkanavas1

content/Hardware Support/UNO/Restore-the-USB-connectivity-firmware-on-UNO-R4-WiFi-with-espflash.md

@@ -36,6 +36,7 @@ Follow these steps:
 1. Run the command:
    * **Windows:** `bin\espflash write-bin -b 115200 0x0 (Get-Item .\firmware\UNOR4-WIFI-S3-*.bin).FullName`
    * **macOS/Linux:** `./bin/espflash write-bin -b 115200 0x0 firmware/UNOR4-WIFI-S3-*.bin`
+   
 > [!NOTE]
 > You may need to adjust your system's security settings to allow this command if you encounter a warning pop-up. To proceed, go to _System Preferences > Privacy & Security_, and under _Security_, click _Allow Anyway_ to allow espflash to run.