IDL4CPP — Typo fixes

1.
In table 7.1 5th row (struct is_bounded) right column:

Indicates whether a type is bounded or not.,

→ Remove comma at end.

2.
In section A.1.7.4 TypeCode Replacement, there is a small typo,

Omg::types::ref_type<CORBA::TypeCode> type() const;

The beginning should be omg:: not Omg::.

3.
Section title,
D.2.1.3.3 Bitmask Tye

→ Bitmask Type

4.
In section D.3.1.3.2 Bitsets,

IDL biset types shall be mapped as defined in Clause 7.14.3.2 of this specification.

→ bitset types