Description of problem:
The current description of logical threads is not accurately describing the implementation.

Work is based on logical address, not hash.

Version-Release number of selected component (if applicable):
6.2.2.117

How reproducible:
100%

Actual results:
VDO Man page:
 processing based on the hash value computed from the block data. The value
 must be at least \*[logicalThreadsMin] and less than or equal to
 \*[logicalThreadsMax]. A logical thread count of
 \*[logicalThreadsBlockMapCacheSizeThreshold] or more will require explicitly
 specifying a sufficiently large block map cache size, as well.


vdo --help output:
 VDO processing based on the hash value computed from the block data.
 The value must be at least {min} and less than or equal to {max}. A
 logical thread count of {threshold} or more will require explicitly
 specifying a sufficiently large block map cache size, as well.



Expected results:
VDO Man page:
 processing based on the logical address. The value must be at least
 \*[logicalThreadsMin] and less than or equal to \*[logicalThreadsMax].
 A logical thread count of \*[logicalThreadsBlockMapCacheSizeThreshold] or
 more will require explicitly specifying a sufficiently large block map cache
 size.

vdo --help output:
 VDO processing based on the logical address. The value must be at least
 {min} and less than or equal to {max}. A logical thread count of
 {threshold} or more will require explicitly specifying a sufficiently
 large block map cache size.

Additional info: