Update README.md

TronixLab · web-flow · commit 9581bb963787 · 2021-01-19T21:08:19.000+08:00
diff --git a/README.md b/README.md
@@ -172,6 +172,6 @@ First Serial RX0, TX0 is used for programming,
 * GPIO1 (U0TXD)
 Another Serial port is available on
 * GPIO16 (U2RXD)
-* GIIO17 (U2TXD)
-When programming it is named as Serial2.
+* GPIO17 (U2TXD)
+When programming it is named as *Serial2*.
 
