Added a great free Terraform cheatsheet from A Cloud Guru (#8228)

* Added a great free Terraform cheatsheet from A Cloud Guru

* Added a great free Terraform cheatsheet from A Cloud Guru

* Added a great Terraform cheatsheet from A Cloud Guru

* Added an awesome Terraform cheatsheet from A Cloud Guru

more/free-programming-cheatsheets.md

@@ -43,6 +43,7 @@
 * [SpringBoot](#springboot)
 * [SQL](#sql)
 * [Tensorflow](#tensorflow)
+* [Terraform](#terraform)
 * [Unit testing](#unit-testing)
 * [Webpack](#webpack)
 
@@ -386,6 +387,11 @@
 * [TensorFlow v2.0 Cheat Sheet](https://web.archive.org/web/20200922212358/https://www.aicheatsheets.com/static/pdfs/tensorflow_v_2.0.pdf) - Altoros (PDF) *(:card_file_box: archived)*
 
 
+### Terraform
+
+* [Terraform Cheatsheet](https://acloudguru.com/blog/engineering/the-ultimate-terraform-cheatsheet) - Eric Pulsifer (HTML)
+
+
 ### Unit testing
 
 * [Chai CheatSheet](https://devhints.io/chai) - devhints, Rico Santa Cruz (HTML)