Comment typo fix.

Adding TaoADMMGetRegularizerCoefficient feature to minimize user having to maintain the said coefficient.

change to consistent use of ch_xxx for chapter names in the docs, instead of a mix of ch_xx and chapter_xx

Merge branch 'barry/2023-05-14/add-fortran-petsccheck' into 'main'

Add PetscCheck() and PetscCheckA() for Fortran

See merge request petsc/petsc!6464

Add PetscCheck() and PetscCheckA() for Fortran

Also fix incorrect use of " in Fortran examples that should be '

Fix trivial typos etc in some manual pages

Also remove manual page for SNESNGSFunction since it does not exist

TaoMonitor: do not error if objective if inf or nan

same behaviour of SNES

Manpages: fix duplicate synopsis

Support fp_trap in CI

TaoLineSearchApply_MT: fix bug

KSP: allow 0 rhs

Fix PetscCallMPI(MPI_Allreduce()) with PETSc types

Fix documentation

Format the ftn-custom files with clang-format. Apparently no particular reason we did not format them initially

Fix typos

Fix some documentation and typos

More manual page fixes

Remove need for seperate lib/petsc/conf/test file by merging with rules file

Commit-type: maintainability

non-test and tutorial makefiles only need rules.doc not the full rules

Commit-type: documentation