Minor updates to doxygen documentation

# Man pages) or section (for LaTeX and RTF).

# The default value is: NO.

INLINE_SIMPLE_STRUCTS = NO

INLINE_SIMPLE_STRUCTS = YES

# When TYPEDEF_HIDES_STRUCT tag is enabled, a typedef of a struct, union, or

# enum is documented as struct, union, or enum with the name of the typedef. So