Spelling fix

Author: JTF4

listener_clients/m5stickc-listener/README.md

@@ -12,7 +12,7 @@ OR
 https://www.adafruit.com/product/4290 (Shipped from USA)
 
 # Installation
-## 1. Using a pre-builded version
+## 1. Using a pre-built version
 
 1. Download an ESP flasher.
 You can use [esphome-flasher](https://github.com/esphome/esphome-flasher). If you want to use it, go to the [Github page](https://github.com/esphome/esphome-flasher) and download the latest release.
@@ -59,4 +59,4 @@ If you receive an error similar to `ImportError: No module named serial` referen
 
 # Improvements and Suggestions
 We are welcome to improvements and suggestions.
-You can submit issues and pull requests on this repo, or contact Joseph Adams through the *"Contact"* page on the [techministry blog](http://www.techministry.blog/contact).
+You can submit issues and pull requests on this repo, or contact Joseph Adams through the *"Contact"* page on the [techministry blog](http://www.techministry.blog/contact).