Change values of blocking C (#26) and fix one unroute track

* Change values of capacitors C1, C2, C3 from 100 nF to 10 nF due to problems with flashing
ESP32 DevKitC.
* Fix unrouted GND track in left up corner (4th pad in second pinhead line from top of board).

Change LED resistors from 150R to 220R

Final touch

Repair pad size of some pinheads (change from oval to circle)

Version 2.1

Version 2.0

Final version for production