[oneMKL][LAPACK] Fix ldc size requirements in {or,un}mtr related files

[sknepper]

For ormtr and unmtr, the specification incorrectly specifies that LDC must be >= max(1,n), when in fact it should be >= max(1,m).
This was done for all {or,un}mtr related APIs (buffer, USM, and scratchpad size).
Also changed notation in these files to ld* >= x instead of x <= ld*.
Fixed an issue where the first row of the input parameters table had been bolded (incorrectly considered a header row) and added missing table to unmtr_scratchpad_size.

[ericlars]

Did you build it? The only change I don't know the effect of is

:header-rows: 0

[sknepper]

Did you build it? The only change I don't know the effect of is

:header-rows: 0

Yes, I built it locally. That change says there are no header rows. With the current code, you can see here: https://oneapi-spec.uxlfoundation.org/specifications/oneapi/v1.3-rev-1/elements/onemkl/source/domains/lapack/ormtr
that the first row of the input parameter table about r is bolded (compare the formatting of "if" in the two lines).
Thanks for the question!

[ericlars]

Gotcha, thanks