Fix formatting issue with a link in README

README.md

@@ -28,7 +28,7 @@ These files use pin 17 as the output for the light source, so you'll need to be
 To delve more into using a Raspberry Pi to light things up, I recommend checking out [this tutorial](https://thepihut.com/blogs/raspberry-pi-tutorials/27968772-turning-on-an-led-with-your-raspberry-pis-gpio-pins).
 In order to use Ruby code instead of Python code like the tutorial does, this code uses the [Pi Piper gem](https://github.com/jwhitehorn/pi_piper).
 
-Finally, this app uses some dependencies which are outlined in its Gemfile.  You can use the [`bundler` gem]((https://bundler.io/) and its associated 
+Finally, this app uses some dependencies which are outlined in its Gemfile.  You can use the [bundler gem]((https://bundler.io/) and its associated 
 [`bundle install`](https://bundler.io/v1.16/man/bundle-install.1.html) command to install the dependencies defined in the Gemfile.
 
 ## Use ##