Capitalizing IoT

Author: Mel W

CONTRIBUTING.md

@@ -1,5 +1,5 @@
 # Contributing to Mbed OS
 
-Mbed OS is an open-source, device software platform for the internet of things. Contributions are an important part of the platform, and our goal is to make it as simple as possible to become a contributor.
+Mbed OS is an open-source, device software platform for the Internet of Things. Contributions are an important part of the platform, and our goal is to make it as simple as possible to become a contributor.
 
-To encourage productive collaboration, as well as robust, consistent and maintainable code, we have built a set of guidelines for contributing to Mbed OS. Please see: [contributing guidelines](https://os.mbed.com/docs/latest/reference/contributing.html).
+To encourage productive collaboration, as well as robust, consistent and maintainable code, we have a set of guidelines for contributing to Mbed OS. Please see: [contributing guidelines](https://os.mbed.com/docs/latest/reference/contributing.html).