add MitID Ervherv to prefill page

src/pages/verify/e-ids/danish-mitid-erhverv.mdx

@@ -55,7 +55,7 @@ You can determine which kind of option the user selected by inspecting the claim
 - Company signatory logins will have a `companySignatory` claim with value `true`.
 - Private logins will have neither of the above.
 
-### Pefill VAT ID (CVR number)
+### Prefill VAT ID (CVR number)
 
 If you already have an expectation of what company the user will login on behalf of, you can prefill the VAT ID (CVR number)
 to limit their selection choice (if multiple roles in the same company) or skip the company selector all together.

src/pages/verify/guides/prefilled-fields.mdx

@@ -18,10 +18,11 @@ By default the user is prompted for this data when needed, but if you would like
 The actual support for controlling the input data varies by eID method:
 
 1. Danish MitID: Use `login_hint=sub:<CPR>` where `<CPR>` has the format `DDMMYYXXXX`
-2. Swedish BankID: Use `login_hint=sub:<SSN>` where `<SSN>` has the format `YYYYMMDDXXXX`
-3. Norwegian BankID Mobile: Use `login_hint=BIM:<PHONENUMBER>:<BIRTHDATE>` where `<PHONENUMBER>` has 8 digits and `<BIRTHDATE>` has the format `DDMMYY`
-4. Norwegian BankID Kodebrikke: Use `login_hint=BID:<SSN>` where `<SSN>` has the format `DDMMYYXXXXX`
-5. Norwegian BankID Biometrics: Use `login_hint=BIS:<SSN>` where `<SSN>` has the format `DDMMYYXXXXX`
+2. Danish MitID Erhverv: Use `login_hint=vatid:DK<CVR>`, [additional details](/verify/e-ids/danish-mitid-erhverv/#prefill-vat-id-cvr-number)
+3. Swedish BankID: Use `login_hint=sub:<SSN>` where `<SSN>` has the format `YYYYMMDDXXXX`
+4. Norwegian BankID Mobile: Use `login_hint=BIM:<PHONENUMBER>:<BIRTHDATE>` where `<PHONENUMBER>` has 8 digits and `<BIRTHDATE>` has the format `DDMMYY`
+5. Norwegian BankID Kodebrikke: Use `login_hint=BID:<SSN>` where `<SSN>` has the format `DDMMYYXXXXX`
+6. Norwegian BankID Biometrics: Use `login_hint=BIS:<SSN>` where `<SSN>` has the format `DDMMYYXXXXX`
 
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