Update README.md

Author: shaoziyang

sensor/README.md

@@ -5,12 +5,16 @@
 * [BMP280 Digital pressure sensor drive](bmp280)
 * [BME280 humidity and pressure sensor drive](bme280)
 * [APDS9930 Digital Proximity and Ambient Light Sensor](APDS9930)
+* [SHT20 Humidity and Temperature Sensor](sht20)
+* [SHT3x Humidity and Temperature Sensor](SHT3x)
 * [ST HTS221 humidity and temperature sensor](HTS221)
 * [ST LPS22 pressure sensor](LPS22)
 * [ST STTS751 temperature sensor](STTS751)
 * [ST LIS2MDL magnetic sensor](LIS2MDL)
 * [ST LIS2DW12 motion sensor](LIS2DW12)
 * [ST LSM6DSO 3D accelerometer and 3D gyroscope sensor](LSM6DSO)
+* [ST LSM6DS33 3D accelerometer and 3D gyroscope sensor](LSM6DS33)
+* [ST LSM303AH ultra-low-power 3D accelerometer and 3D magnetometer](LSM303AH)
 * [NTC thermistor](NTC)
 
 From microbit/micropython Chinese community.