mongodb/docs — pull request #818 by puentesarrin (2013-04-07 17:29:11+00:00)
Title: Minor typo on title of "Create a Sparse Indexes"

All of tutorials have singular mention to index types on titles:

- Create **an index**
- Create **a** compound **index**
- Create **a** unique **index**
- Create **a** hashed **index**