dead link checker update

Author: askuric

docs/boards/simplefoc_shield/fabrication/shield_fabrication_v1.md

@@ -36,7 +36,7 @@ Version  | link | Release date | Comment
 
 
 ## Fabrication procedure and cost
-The price of the fabrication will highly depend of the number of boards and the companies you decide to use both as PCB manufacturers and the component suppliers. Here are two nice articles explaining how to approach the problem choosing the PCB manufacturer form [electronics-notes.com](https://www.electronics-notes.com/articles/constructional_techniques/printed-circuit-board-pcb/how-to-choose-right-best-pcb-manufacturer.php) and component supplier from [pcbonline.com](https://www.pcbonline.com/blog/How_to_Choose_a_PCB_Component_Supplier_165.html). 
+The price of the fabrication will highly depend of the number of boards and the companies you decide to use both as PCB manufacturers and the component suppliers. Here are two nice articles explaining how to approach the problem choosing the PCB manufacturer form [electronics-notes.com](https://www.electronics-notes.com/articles/constructional_techniques/printed-circuit-board-pcb/how-to-choose-right-best-pcb-manufacturer.php) and component supplier from [electronics-notes.com](https://www.electronics-notes.com/articles/constructional_techniques/printed-circuit-board-pcb/how-to-choose-right-best-pcb-manufacturer.php). 
 But in most of cases it will always boil down to the price :)
 
 ## PCB fabrication + Self assembly  - **preferred choice** 📢

docs/boards/simplefoc_shield/fabrication/shield_fabrication_v2.md

@@ -42,7 +42,7 @@ Version  | link | Release date | Comment
 
 
 ## Fabrication procedure and cost
-The price of the fabrication will highly depend of the number of boards and the companies you decide to use both as PCB manufacturers and the component suppliers. Here are two nice articles explaining how to approach the problem choosing the PCB manufacturer form [electronics-notes.com](https://www.electronics-notes.com/articles/constructional_techniques/printed-circuit-board-pcb/how-to-choose-right-best-pcb-manufacturer.php) and component supplier from [pcbonline.com](https://www.pcbonline.com/blog/How_to_Choose_a_PCB_Component_Supplier_165.html). 
+The price of the fabrication will highly depend of the number of boards and the companies you decide to use both as PCB manufacturers and the component suppliers. Here are two nice articles explaining how to approach the problem choosing the PCB manufacturer form [electronics-notes.com](https://www.electronics-notes.com/articles/constructional_techniques/printed-circuit-board-pcb/how-to-choose-right-best-pcb-manufacturer.php) and component supplier from [electronics-notes.com](https://www.electronics-notes.com/articles/constructional_techniques/printed-circuit-board-pcb/how-to-choose-right-best-pcb-manufacturer.php). 
 But in most of cases it will always boil down to the price :)
 
 ## PCB fabrication + Self assembly

docs/simplefoc_library/hardware/mcus/index.md

@@ -20,7 +20,7 @@ Arduino <span class="simple">Simple<span class="foc">FOC</span>library</span> su
 - [SAMD21/SAMD51](samd_mcu)
 - [Raspberry Pi Pico](rpi_mcu) - *initial support*
 - [Portenta H7](portenta_mcu) - *initial support*
-- [nRF52](nRF52_mcu) - *initial support*
+- [nRF52](nrf52_mcu) - *initial support*
 
 devices *off-the-shelf*, using Arduino IDE, and with small modifications many more... 😃