docs: contributing

.github/CONTRIBUTING.md

@@ -108,3 +108,9 @@ make pre_commit/install
 ```
 
 [Shell Guide](https://google.github.io/styleguide/shellguide.html#s7.2-variable-names) by Google Conventions.
+
+### Documentation
+For us the documentation its really important, we are a small group and we want to mantain this project for long, to do that we will need your help
+
+## ADR
+If you want to change something related to the architecture or apply a change that it's a decision on how the library works please use [ADR](https://adr.github.io/) otherwise we will request you to do so on the PR.