Fix formatting

model/model.md

@@ -40,38 +40,37 @@ The diagram below depicts the relationships between [Participant Agent](./termin
 - A [Dataset](./terminology.md#dataset) has **_at least one_** [Offer](./terminology.md#offer), which is an [ODRL Offer](https://www.w3.org/TR/odrl-model/#policy-offer) describing the [Usage Policy](./terminology.md#policy) associated with the [Dataset](./terminology.md#dataset).
 - A [Connector](./terminology.md#connector--data-service-) is a [Participant Agent](./terminology.md#participant-agent) that performs [Contract Negotiation](./terminology.md#contract-negotiation) and [Transfer Process](./terminology.md#transfer-process) operations with another [Connector](./terminology.md#connector--data-service-). An outcome of a [Contract Negotiation](./terminology.md#contract-negotiation) may be the production of an [Agreement](./terminology.md#agreement), which is an [ODRL Agreement](https://www.w3.org/TR/odrl-model/#policy-agreement) defining the [Usage Policy](./terminology.md#policy) agreed to for a [Dataset](./terminology.md#dataset).
 
-## 2.2 Classes
+### 2.2 Classes
 
 Not all [Dataspace](./terminology.md#dataspace) entities have a concrete _technical_ materialization; some entities may exist as purely logical constructs. For example, a [Dataspace Authority](./terminology.md#dataspace-authority) and a [Participant Agent](./terminology.md#participant-agent) have no representation in the protocol message flows that constitute [Dataspace](./terminology.md#dataspace) interactions. This section outlines the classes that comprise the concrete elements of the model, i.e., those that are represented in protocol message flows.
 
 **_Note 1:_**
 The classes and definitions used in the Dataspace Protocol are reused from different standards and specifications as much as possible, in particular, [DCAT](https://www.w3.org/TR/vocab-dcat-3) and [ODRL](https://www.w3.org/TR/odrl/). As, however, the external definitions allow different interpretations or provide more attributes than required, the Dataspace Protocol is leveraging _profiles_ of the original definitions rather than the complete original expressiveness. A _profile_ in this sense is a restriction or subset of an external definition, enforcing that every occurrence of an externally defined class is always conformant with the original definition. However, not every standard-compliant class might be compliant to the dataspace profile.
 
-### 2.2.1 Catalog
+#### 2.2.1 Catalog
 
 A [Catalog](./terminology.md#catalog) is a [DCAT Catalog](https://www.w3.org/TR/vocab-dcat-3/#Class:Catalog) with the following attributes:
 
 - 0..N [Datasets](./terminology.md#dataset). Since a [Catalog](./terminology.md#catalog) may be dynamically generated for a request based on the requesting [Participant's](./terminology.md#participant) credentials it is possible for it to contain 0 matching [Datasets](./terminology.md#dataset). (DCAT PROFILE)
 - 1..N [DCAT DataService](https://www.w3.org/TR/vocab-dcat-3/#Class:Data_Service) that references a [Connector](./terminology.md#connector--data-service-) where [Datasets](./terminology.md#dataset) may be obtained. (DCAT PROFILE)
 
-### 2.2.2 Dataset
+#### 2.2.2 Dataset
 
 A [Dataset](./terminology.md#dataset) is a [DCAT Dataset](https://www.w3.org/TR/vocab-dcat-3/#Class:Dataset) with the following attributes:
 
 - 1..N `hasPolicy` attributes that contain an [ODRL `Offer`](https://www.w3.org/TR/odrl-vocab/#term-Offer) defining the [Usage Policy](./terminology.md#policy) associated with the [Dataset](./terminology.md#dataset). **_Offers must NOT contain any target attributes. The target of an [Offer](./terminology.md#offer) is the associated [Dataset](./terminology.md#dataset)._** (ODRL PROFILE)
 - 1..N [DCAT Distributions](https://www.w3.org/TR/vocab-dcat-3/#Class:Distribution). Each distribution must have at least one `DataService` which specifies where the distribution
   is obtained. Specifically, a `DataService` specifies the endpoint for initiating a [Contract Negotiation](./terminology.md#contract-negotiation) and [Transfer Process](./terminology.md#transfer-process). (DCAT PROFILE)
 
-### 2.2.3 Offer
+#### 2.2.3 Offer
 
 An [Offer](./terminology.md#offer) is an [ODRL Offer](https://www.w3.org/TR/odrl-model/#policy-offer) with the following attributes:
 
 - An ODRL `uid` is represented as an "@id" that is a unique identifier. (ODRL PROFILE)
 - The [Offer](./terminology.md#offer) must be unique to a [Dataset](./terminology.md#dataset) since the target of the [Offer](./terminology.md#offer) is derived from its enclosing context.
 - The value of the `target` attribute is the dataset id. Except if the [Offer][Catalog](./terminology.md#offer) is used in an enclosing [Catalog](./terminology.md#catalog) or [Dataset](./terminology.md#dataset), then the there must not be any `target` attribute set.
 
-
-## 2.2.4 Agreement
+### 2.2.4 Agreement
 
 An [Agreement](./terminology.md#agreement) is an [ODRL Agreement](https://www.w3.org/TR/odrl-model/#policy-agreement) with the following attributes: