feat: change tag format

Author: woile

.cz.toml

@@ -1,3 +1,4 @@
 [tool.commitizen]
 name = "cz_conventional_commits"
 version = "0.1.0"
+format = "v$version"

README.md

@@ -48,8 +48,3 @@ To solve that you will need a personal access token.
 Follow the instructions of [github tutorial](https://docs.github.com/en/github/authenticating-to-github/creating-a-personal-access-token#creating-a-token) in order
 to create one
 
-## Contributing
-
-Whenever we want to release a new version, we have to mark it as breaking change.
-The `.cz.toml` configuration is using `$major` to format the tag, this means that
-it's the only kind of release allowed, so, mark as breaking change.