Fix formatting of Neural network post-filter characteristics SEI parameter table

Parameter names are longer than in any other section. This caused the table to be extended beyond the right page border.

A new table type was introduced which reduces the width of the right table i column.

Additionally the following fixes are included:

• fix typo that prevented compilation
• remove unnecessary tabular formatting inside descriptions (including not properly matched one)
• reduce column with in sub-tables to match new column width