Add links to translation in Saola board user guide
Technical Reference Manual (PDF) <{IDF_TARGET_TRM_EN_URL}>
:esp32: Datasheet (PDF) <https://espressif.com/sites/default/files/documentation/esp32_datasheet_en.pdf>
- :esp32s2: Datasheet (PDF) <https://espressif.com/sites/default/files/documentation/esp32s2_datasheet_en.pdf>
+ :esp32s2: Datasheet (PDF) <https://www.espressif.com/sites/default/files/documentation/esp32-s2_datasheet_en.pdf>
:esp32: Hardware Design Guidelines (PDF) <https://espressif.com/sites/default/files/documentation/esp32_hardware_design_guidelines_en.pdf>
:esp32: Silicon Errata (PDF) <https://espressif.com/sites/default/files/documentation/eco_and_workarounds_for_bugs_in_esp32_en.pdf>
Modules and Boards <modules-and-boards>
