[Doc] added docu for convergence criteria

...jectFile/process/convergence_criterion/DeltaX/c_DeltaX.md

...jectFile/process/convergence_criterion/DeltaX/t_abstol.md

...tFile/process/convergence_criterion/DeltaX/t_norm_type.md

...jectFile/process/convergence_criterion/DeltaX/t_reltol.md

...ence_criterion/PerComponentDeltaX/c_PerComponentDeltaX.md

...ess/convergence_criterion/PerComponentDeltaX/t_abstols.md

...s/convergence_criterion/PerComponentDeltaX/t_norm_type.md

...ess/convergence_criterion/PerComponentDeltaX/t_reltols.md

..._criterion/PerComponentResidual/c_PerComponentResidual.md

...s/convergence_criterion/PerComponentResidual/t_abstols.md

...convergence_criterion/PerComponentResidual/t_norm_type.md

...s/convergence_criterion/PerComponentResidual/t_reltols.md

...File/process/convergence_criterion/Residual/c_Residual.md

...ctFile/process/convergence_criterion/Residual/t_abstol.md

...ile/process/convergence_criterion/Residual/t_norm_type.md

...ctFile/process/convergence_criterion/Residual/t_reltol.md

.../process/convergence_criterion/i_convergence_criterion.md

...ation/ProjectFile/process/convergence_criterion/t_type.md