doc: add new HTS221 documentation

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>

Author: fpistm

docs/libraries/Hosted-library-documentation.md

@@ -11,3 +11,9 @@ development documentation.
 - [Latest released API reference](https://stm32duino.github.io/STM32LoRaWAN/)
 - [Development API reference](https://stm32duino.github.io/STM32LoRaWAN/dev/)
 - [Source repository](https://github.com/stm32duino/STM32LoRaWAN)
+
+## HTS221
+
+- [Latest released API reference](https://stm32duino.github.io/HTS221/)
+- [Development API reference](https://stm32duino.github.io/HTS221/dev/)
+- [Source repository](https://github.com/stm32duino/HTS221)

docs/libraries/dedicated/HTS221.md

@@ -57,8 +57,7 @@ Some libraries have been developed to support specific features (hardware or not
   * [FatFS](https://github.com/stm32duino/FatFs): FatFs is a generic FAT file system module for small embedded systems. The FatFs is written in compliance with ANSI C and completely separated from the disk I/O layer. Therefore it is independent of hardware architecture
 
 
-* [HTS221](https://github.com/stm32duino/HTS221): to support the HTS221 capacitive digital sensor for relative humidity and temperature.
-  Dedicated [HTS221](dedicated/HTS221.md)
+* [HTS221](https://github.com/stm32duino/HTS221): to support the HTS221 capacitive digital sensor for relative humidity and temperature. See the [hosted API documentation](https://stm32duino.github.io/HTS221/).
 * [IIS2MDC](https://github.com/stm32duino/IIS2MDC):  to support the IIS2MDC high-performance 3-axis magnetometer
 * [ISM330DLC](https://github.com/stm32duino/ISM330DLC): to support the ISM330DLC 3D accelerometer and 3D gyroscope
 * [LIS2DW12](https://github.com/stm32duino/LIS2DW12): to support the LIS2DW12 3D accelerometer

docs/libraries/index.md

@@ -26,7 +26,6 @@ nav:
     - Built-in:
       - Servo: libraries/built-in/Servo-library.md
     - Dedicated:
-      - HTS221: libraries/dedicated/HTS221.md
       - LPS22HB: libraries/dedicated/LPS22HB.md
       - LIS3MDL: libraries/dedicated/LIS3MDL.md
       - LSM6DSL: libraries/dedicated/LSM6DSL.md
@@ -41,6 +40,7 @@ nav:
     - Hosted library documentation:
       - Library documentation index: libraries/Hosted-library-documentation.md
       - STM32LoRaWAN: https://stm32duino.github.io/STM32LoRaWAN/
+      - HTS221: https://stm32duino.github.io/HTS221/
   - Development:
     - Contributing: development/Contributing.md
     - Using the Git Repository: development/Using-git-repository.md