[ADF-4152] Updated folder structure of core docs (#4415)

* [ADF-4152] Moved core library docs into subfolders

* [ADF-4152] Moved core library docs into subfolders

* [ADF-4152] Manual fixes to core doc file links

* [ADF-4152] Further automatic + manual link tidying

docs/core/models/product-version.model.md

@@ -0,0 +1,78 @@
+---
+Title: Product Version model
+Added: v2.0.0
+Status: Active
+---
+
+# [Product Version model](../../../lib/core/models/product-version.model.ts "Defined in product-version.model.ts")
+
+Contains version and license information classes for Alfresco products.
+
+## Details
+
+The classes in this model contain details about the version and license
+status of Process Services and Content Services. You can access this
+information from ADF using the [Discovery Api service](../services/discovery-api.service.md).
+See also the
+[Alfresco JS API docs](https://github.com/Alfresco/alfresco-js-api/tree/master/src/alfresco-discovery-rest-api)
+to learn more about the REST architecture that the service is based on.
+
+```ts
+class BpmProductVersionModel {
+    edition: string;
+    majorVersion: string;
+    revisionVersion: string;
+    minorVersion: string;
+    type: string;
+}
+
+class EcmProductVersionModel {
+    edition: string;
+    version: VersionModel;
+    license: LicenseModel;
+    status: VersionStatusModel;
+    modules: VersionModuleModel[] = [];
+}
+
+class VersionModel {
+    major: string;
+    minor: string;
+    patch: string;
+    hotfix: string;
+    schema: number;
+    label: string;
+    display: string;
+}
+
+class LicenseModel {
+    issuedAt: string;
+    expiresAt: string;
+    remainingDays: number;
+    holder: string;
+    mode: string;
+    isClusterEnabled: boolean;
+    isCryptodocEnabled: boolean;
+}
+
+class VersionStatusModel {
+    isReadOnly: boolean;
+    isAuditEnabled: boolean;
+    isQuickShareEnabled: boolean;
+    isThumbnailGenerationEnabled: boolean;
+}
+
+class VersionModuleModel {
+    id: string;
+    title: string;
+    description: string;
+    version: string;
+    installDate: string;
+    installState: string;
+    versionMin: string;
+    versionMax: string;
+}
+```
+
+## See also
+
+-   [Discovery api service](../services/discovery-api.service.md)