This is a first set of doc mods that fix some minor things. Most of the changes should be obvious.

Here are a few that may be noteworthy. The cursor uri tables (3 copies!) were different from each other. I brought them up to date. It appears that the one in data_sources.dox is "the master" although I probably would have expected the master to be in wiredtiger.in. I also moved table: alphabetically.

I changed hazard reference to hazard pointer because when I tried searching for that, it does not search well (Google tries very hard to make it harvard reference) and hazard pointer immediately is fruitful.

For cursor_rand, apparently having both a section and subpage with the same name doesn't really work and the section wins, so it was a link to itself.

Things I did not fix:
1. Why does the TOC have Data Sources -> Cursor Operations? I couldn't figure out how/why that is there.
2. Cursor random is given unusual prominence given its specialized nature.
3. The cursor_ops page never discusses get_value or retrieving values.
The WT_CURSOR page for get_value() does not discuss the varargs.
Is the varargs discussed somewhere? It is shown on the data_sources page.