Add Trio to DIY systems list in Introduction.md

Updated the list of DIY systems to include Trio.

Author: tmhastings

docs/EN/Getting-Started/Introduction.md

@@ -25,7 +25,7 @@ The best solution for type 1 diabetes would be a “functional cure” (probably
 
 ## How and why did looping start?
 
-The development of commercial technology for people with type 1 diabetes (T1D) is very slow. In 2013 the T1D community founded the #WeAreNotWaiting movement. They developed systems themselves using existing approved technology (insulin pumps and sensors) to improve blood glucose control, safety, and quality of life. These are known as DIY (do-it-yourself) systems, because they are not formally approved by health bodies (FDA, NHS etc). There are four main DIY systems available: [OpenAPS](https://openaps.org/what-is-openaps/), **AAPS**, [Loop](https://loopkit.github.io/loopdocs/#what-is-loop) and [iAPS]( https://github.com/Artificial-Pancreas/iAPS?fbclid=IwAR2fA9Y9YqYzpKSrtEsotfXl5b67UclDkKgyrv52tQLzYbOoBeNGRmjlJJI). 
+The development of commercial technology for people with type 1 diabetes (T1D) is very slow. In 2013 the T1D community founded the #WeAreNotWaiting movement. They developed systems themselves using existing approved technology (insulin pumps and sensors) to improve blood glucose control, safety, and quality of life. These are known as DIY (do-it-yourself) systems, because they are not formally approved by health bodies (FDA, NHS etc). There are four main DIY systems available: [OpenAPS](https://openaps.org/what-is-openaps/), **AAPS**, [Loop](https://loopkit.github.io/loopdocs/#what-is-loop) and [Trio](https://triodocs.org). 
 
 A great way to understand the fundamentals of DIY looping is to read Dana Lewis’s book “Automated Insulin Delivery”. You can access it [here](https://www.artificialpancreasbook.com/) for free (or buy a hardcopy of the book). If you want to understand more about [OpenAPS](https://openaps.org/what-is-openaps/), which **AAPS** has developed from, the [OpenAPS website](https://openaps.org/what-is-openaps/) is a great resource.