Fix tyop in KijiTableMapReduceJobInput
Checkstyle
Rewrote javadocs for DirectKijiTableMapReduceJobOutput.
Rewrote javadocs for HFileMapReduceJobOutput.
Reworte javadocs for TextMapReduceJobOutput.
Rewrote javadocs for SequenceFileMapReduceJobOutput.
Rewrite javadocs for MapFileMapReduceJobOutput.
Rewrote javadocs for AvroKeyMapReduceJobOutput.
Rewrote javadocs for AvroKeyValueMapReduceJobOutput.