fix readme typo

README.md

@@ -4,7 +4,7 @@ The place where all things npm will one day be documented.
 
 ## Editing Content
 
-All the markdown files can be found in the [content](content) directory. Some of these files live here in this repository, others live in other repositories. and are imported during the build process. These imported files are [ignored by git](.gitignore) to prevent people from accidentally editing the wrong files.
+All the markdown files can be found in the [content](content) directory. Some of these files live here in this repository, others live in other repositories and are imported during the build process. These imported files are [ignored by git](.gitignore) to prevent people from accidentally editing the wrong files.
 
 - [api](https://github.com/npm/npm/tree/master/doc/api) is copied from npm.
 - [cli](https://github.com/npm/npm/tree/master/doc/cli) is copied from npm.