Refactor prose

Author: wooorm

readme.md

@@ -104,8 +104,8 @@ See [`contributing.md` in `syntax-tree/.github`][contributing] for ways to get
 started.
 See [`support.md`][support] for ways to get help.
 
-This project has a [Code of Conduct][coc].
-By interacting with this repository, organisation, or community you agree to
+This project has a [code of conduct][coc].
+By interacting with this repository, organization, or community you agree to
 abide by its terms.
 
 ## License