esp32/README.md: merged with upstream

Author: MrSurly

esp32/README.md

@@ -160,9 +160,9 @@ import machine
 antenna = machine.Pin(16, machine.Pin.OUT, value=0)
 ```
 
-
 Troubleshooting
 ---------------
 
-* Continuous reboots after programming: Ensure FLASH_MODE is correct for your board (e.g. ESP-WROOM-32 should be DIO). Perform a `make clean`, rebuild, redeploy.
-
+* Continuous reboots after programming: Ensure FLASH_MODE is correct for your
+  board (e.g. ESP-WROOM-32 should be DIO). Then perform a `make clean`, rebuild,
+  redeploy.