Update README.md

Author: n9wxu

README.md

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+FreeRTOS includes libraries that are part of the [FreeRTOS 202012.00 LTS](https://github.com/FreeRTOS/FreeRTOS-LTS/tree/202012.00-LTS) release. Learn more about the FreeRTOS 202012.00 LTS libraries at [https://freertos.org/lts-libraries.html](https://freertos.org/lts-libraries.html).
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 ## Getting started
 The [FreeRTOS.org](https://www.freertos.org) website contains contains a [FreeRTOS Kernel Quick Start Guide](https://www.freertos.org/FreeRTOS-quick-start-guide.html), a [list of supported devices and compilers](https://www.freertos.org/RTOS_ports.html), the [API reference](https://www.freertos.org/a00106.html), and many other resources.
 
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 ## Previous releases
 [Releases](https://github.com/FreeRTOS/FreeRTOS/releases) contains older FreeRTOS releases.
 
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 ## FreeRTOS Lab Projects
 FreeRTOS Lab projects are libraries and demos that are fully functional, but may be experimental or undergoing optimizations and refactorization to improve memory usage, modularity, documentation, demo usability, or test coverage.