mongodb/docs — pull request #1831 by bgrabar (2014-06-09 17:58:15+00:00)
Title: suggested change for visual clarity

In the published output, the inclusion of the outerbrackets gives the first and last fields greater indents than the other sibling fields. My thinking is that readers might more likely be thrown off (for a moment) by the uneven indents than by the lack of the outermost brackets.