* docs: contributing documentation

* docs: update run-on sentence.
Co-authored-by: Tim Gross <tgross@hashicorp.com>

* refact: format link properly
Co-authored-by: Tim Gross <tgross@hashicorp.com>

* refact: format link properly
Co-authored-by: Tim Gross <tgross@hashicorp.com>

* refact: clean up language and format link
Co-authored-by: Tim Gross <tgross@hashicorp.com>

* refact: format link properly
Co-authored-by: Tim Gross <tgross@hashicorp.com>
Co-authored-by: Tim Gross <tgross@hashicorp.com>