Merge pull request #191 from gmacario/patch-2

Fix typo

Author: jhansson-ard

content/learn/04.electronics/06.power-tree/power-tree-style-guide.md

@@ -55,12 +55,12 @@ As you may have noticed, each type of component has its own visual style. The in
 ![Power Tree Components](assets/powerTreeComponents.png)
 
 ## Further Resources
-Various IC manufactuers have material for understanding power conversion, including switch mode power supplies. These can help advanced users better understand power conversion that you see in the Power Trees included in the Arduino datasheets. See [ON Semiconductor's Switch-Mode Power Supply Reference Manual](https://www.onsemi.com/pub/Collateral/Smpsrm-D.PDF) or the [Power Topologies Handbook by Texas Instruments](https://www.ti.com/seclit/ug/slyu036/slyu036.pdf).
+Various IC manufacturers have material for understanding power conversion, including switch mode power supplies. These can help advanced users better understand power conversion that you see in the Power Trees included in the Arduino datasheets. See [ON Semiconductor's Switch-Mode Power Supply Reference Manual](https://www.onsemi.com/pub/Collateral/Smpsrm-D.PDF) or the [Power Topologies Handbook by Texas Instruments](https://www.ti.com/seclit/ug/slyu036/slyu036.pdf).
 
 
 In order to explain complex interactions, conceptual diagrams similar to the Power Tree are widely used by domain experts to quickly and efficiently convey information. For a survey of how conceptual diagrams are used in various disciplines see:
 - [Ma’ayan, Dor, et al. ‘How Domain Experts Create Conceptual Diagrams and Implications for Tool Design’. Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems, ACM, 2020](https://doi.org/10.1145/3313831.3376253)
 - [Tippett, Christine D. ‘What Recent Research on Diagrams Suggests about Learning with Rather than Learning from Visual Representations in Science’. International Journal of Science Education, vol. 38, no. 5, Mar. 2016](https://doi.org/10.1080/09500693.2016.1158435)
 
 
-The [Engineering Kit Rev2](https://store.arduino.cc/products/arduino-engineering-kit-rev2) goes into more detail about how Model-based Design can be used to develop and understand complex systems.
+The [Engineering Kit Rev2](https://store.arduino.cc/products/arduino-engineering-kit-rev2) goes into more detail about how Model-based Design can be used to develop and understand complex systems.