Update library.properties

Author: khoih-prog

library.properties

@@ -5,6 +5,6 @@ maintainer=Khoi Hoang <[email protected]>
 license=MIT
 sentence=This library enables you to use 1 Interrupt from Hardware Timers on an ESP32 board to control 16 or more servo motors.
 paragraph=Now these new 16 ISR-based Servo controllers just use one ESP32 Hardware Timer. The accuracy is nearly perfect compared to software timers. The most important feature is they're ISR-based timers. Therefore, their executions are not blocked by bad-behaving functions / tasks. This important feature is absolutely necessary for mission-critical tasks.
-category=Timing
+category=Timing Control Device Time Timer Servo Interrupt esp32
 url=https://github.com/khoih-prog/ESP32_ISR_Servo
 architectures=esp32