Rework "Donate to Arduino" section into "Contribute" (#531)

Arduino no longer accepts donations

Author: seaxwi

content/About Arduino/Contribute/Contribute-to-Arduino.md

@@ -0,0 +1,28 @@
+---
+title: "Contribute to Arduino"
+---
+
+Learn how to contribute to Arduino open source projects.
+
+---
+
+## Engage in the community
+
+Contribute by providing help and inspiration to other users:
+
+* Share projects on [Arduino Project Hub](https://projecthub.arduino.cc/).
+* Provide support and add to the discussion in the  official [Arduino forum](https://forum.arduino.cc/).
+
+## Contribute to open source Arduino projects on GitHub
+
+You can contribute to many projects by submitting issues and pull requests on GitHub:
+
+* Arduino development tools, like [Arduino IDE](https://github.com/arduino/arduino-ide), [Arduino CLI](https://github.com/arduino/arduino-cli).
+* Board cores, such as [AVR](https://github.com/arduino/ArduinoCore-avr), [Mbed](https://github.com/arduino/ArduinoCore-mbed), and [Renesas](https://github.com/arduino/ArduinoCore-renesas).
+* Contribute to the documentation on [Arduino Docs](https://github.com/arduino/docs-content) and the [Arduino Help Center](https://github.com/arduino/help-center-content).
+
+[Find more projects on github.com/arduino](https://www.arduino.cc/en/contribute/){.link-chevron-right}
+
+## Create and share libraries
+
+Submit new libraries to the [Arduino Library Manager index](https://github.com/arduino/library-registry).

content/About Arduino/Contribute/Donations.md

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+---
+title: "Donations"
+id: 360017233680
+---
+
+Arduino company is no longer soliciting monetary donations. If you have questions about a previous donation, please [contact us](https://www.arduino.cc/en/contact-us/).
+
+If you’d like to support the Arduino open-source project, there are many other ways to contribute. Whether you’re a developer, hardware engineer, linguist, or jack of all trades, your help is always appreciated.
+
+[Learn how to contribute to Arduino](https://www.arduino.cc/en/contribute/){.link-chevron-right}