Update p5.serialport description

Author: Qianqianye

src/data/en.yml

@@ -787,7 +787,7 @@ libraries:
     Draw 2D primitives in a sketchy look. Created by Janneck Wullschleger, based
     on a port of the original Processing library
   p5.serialport: >-
-    p5.serial enables serial communication between devices that support serial
+    p5.serialport enables serial communication between devices that support serial
     (RS-232) and p5 sketches running in the browser.
   Shape5: >-
     Shape5 is a 2D primative library for elementary students who are learning to