doc: uart rs485 fix incorrect sch circuit label
@@ -353,7 +353,7 @@ Circuit C: Auto Switching Transmitter/Receiver
VCC1 <-------------------+-----------+ +-------------------+----> VCC2
10K ____ | | | |
+---|____|--+ +---x-----------x---+ 10K ____ |
- | | | +---|____|--+ GND2
+ | | | +---|____|--+
RX <----------+-------------------| RXD | |
10K ____ | A|---+---------------<> A (+)
+-------|____|------| PV ADM2483 | | ____ 120
@@ -363,7 +363,7 @@ Circuit C: Auto Switching Transmitter/Receiver
---+ +-->| /RE | | ____
10K | | | | +---|____|---+
____ | /-C +---| TXD | 10K |
- TX >---|____|--B___|/ NPN | | | |
+ TX >---|____|--+_B_|/ NPN | | | |
|\ | +---x-----------x---+ |
| \-E | | | |
| | | | |
