Speeling error (#1239)

Co-authored-by: Ryan Hoffman <[email protected]>

Author: ChadMatsalla

src/docs/devices/Feit-DIMSMART-3-CAN/index.md

@@ -28,7 +28,7 @@ In the plastic socket on the board is a place for ground and 3v3. Connect NRST t
 to put the board in flash mode. Once you disconnect ground from NRST, the board "boots". The board needs to be in flash
 mode to read the flash or to write the flash but once the process starts you can disconnect ground from NRST.
 
-I don't like to solder onto that pad because it can pull the pad off. This makes the board undlashable. Instead, I hold
+I don't like to solder onto that pad because it can pull the pad off. This makes the board unflashable. Instead, I hold
 (with fingers) a ground-connected wire to NRST, power the board, press enter on the command. Then I can let go.
 
 ```bash