Add support for embedded forms

Currently, embedded forms are shown as:

| Parameter | Type |Required? | Format| Description |
| ------------- |-------------|-----|----|----|
|main[sub_forms]|string|true||

This PR renders them as:

| Parameter | Type |Required? | Format| Description |
| ------------- |-------------|-----|----|----|
|main[subs][][id]	|string|	true		
|main[subs][][type]|	string|	true		
|main[subs][][token]|	string|	false		
|main[subs][][refreshToken]|	string|	false		
|main[subs][][expiresIn]|	string|true