Use consistent verb form in one-line function descriptions

[dbaston]

The one-line function descriptions that appear in the help docs are a mixture of imperatives

ST_NPoints — Return the number of points (vertexes) in a geometry.

Or descriptions

ST_NDims — Returns coordinate dimension of the geometry as a small int. Values are: 2,3 or 4.

These should be made consistent (always "return" or always "returns")

[mdavis]

Dan, any preference for which verb form to use?

I did a very brief scan of other docs, but the results are inconclusive. The OGC SFS 99-049 uses "Returns", while the Postgres documentation seems to mostly use "Return" (e.g. see the ​string functions doc).

My leaning is towards "Returns" etc.

[dbaston]

I'd lean towards "returns" as well.