Claimed missing identifier when typedef unnamed enum/struct/union

[Miniature]

Describe the bug

When attempting to use typedef on an enum that has not been given an identifier, norminette outputs "Missing identifier in typedef declaration". Named enums are fine, only unnamed ones give the error.
This might be a quibble about how things are written, but my reading of V3's "An enum's name must start by e_." doesn't require there to be a name, only that if there is it should have a particular format. If that's the case I recommend changing it to read "An enum must have a name beginning with e_.".
All of this also applies to structs and unions.

Erroneous code

typedef enum {
	a
} t_enum;

Additional context

• OS: MacOS Darwin 19.6.0
• python3 --version: Python 3.9.5
• norminette -v: norminette 3.3.54

[matthieu42Network]

Hello, we will add this restriction on the pdf V3. But don't forget that the norminette IS the reference, not the pdf. :)