Update belgian-ibans.mdx (#498)

Author: max-koro

docs/preview/belgian-ibans/belgian-ibans.mdx

@@ -65,6 +65,7 @@ Belgian account holders follow Swan's standard onboarding requirements with thes
 Belgian citizens and residents are attributed a national identification number:
 - Rijksregisternummer or RRN in Dutch.
 - Numéro National or NN in French.
+
 Swan must collect this identifier when a Belgian citizen or resident is the account holder of an individual account. Currently, only identity cards and residency permits are accepted for Belgian IBAN accounts. Passports will only be accepted once RRN declaration is enabled for the onboarding flow.
 
 Belgian individual accounts require identity verification following Swan's [identification](/topics/users/identifications/) process.