Update README.md

README.md

@@ -9,8 +9,8 @@ This app allow beginner user to flash firmware and image on esp devices without
 1. Download this app and [esptool.exe](https://github.com/espressif/esptool/releases)
 2. Put it together in a folder of your choice
 3. Put is the firmware/image bin file in this same folder
-   3-1. Make sure the firmware bin file is named "firmware.bin"
-   3-2. Make sure the image bin file is named "image.bin"
+   - Make sure the firmware bin file is named "firmware.bin"
+   - Make sure the image bin file is named "image.bin"
 4. Run EspFlasher and choose the com port of your board
 5. Click on the button corresponding to what you want to do (flashing firmware or file image)
 6. Wait until he finish