pieeprom-2020-09-03.bin - Fix filename

Author: timg236

firmware/beta/pieeprom-2020-09-03.bin

@@ -3,13 +3,14 @@
 USB MSD boot also requires updated beta GPU firmware. Please read
 https://www.raspberrypi.org/documentation/hardware/raspberrypi/bcm2711_bootloader_config.md
 
-## 2020-09-02 Only use green LED for error status in bootloader - BETA
+## 2020-09-03 Only use green LED for error status in bootloader - BETA
    * Turn the green LED on and leave it on unless an error code occurs.
      Previously, SD activity was displayed but that plus muxing with the
      SPI CS made the LED activity confusing.
      The HDMI diagnostics screen now provides much better information
      for determing if the bootloader is running or frozen.
    * CM4 enable GPIO for SD power.
+   * Filename should be 2020-09-03
 
 ## 2020-08-31 Disable self-update from SD card - BETA
    * Since the ROM will load recovery.bin from the SD card self update is not