fixed docs project to point to correct assembly location.
CSHARP-959: wnote and jnote no longer throw errors on pre 2.6 servers.

Conflicts:
	src/MongoDB.Driver/Operations/BulkWriteResultConverter.cs
Revert "CSHARP-959: wnote and jnote no longer throw errors on pre 2.6 servers."

This reverts commit 064bdfa47ecc4284260d17b89c92cff60426b79a.
CSHARP-959: don't recognize wnote or jnote as errors.
Fix unit test that was failing because it sometimes couldn't read its own writes.
Fix another unit test that was sometimes failing when it couldn't read its own writes.