DOCS-97. Fix resolution of API doc macros to URLs.

API docs were being linked to via macros that did not exist due to
case-sensitivity. These were being silently transformed into bad URLs.

The underlying macros and the release script have been updated to match
the correct state of the world.
DOCS-79. Update reference to JSONBulkImporter.

JSONBulkImporter moved from KijiMR to the KijiMR Library a while
ago, but the package name in the documentation was not updated.