adding new document types

Reviewed-by: vladimirhasko <vladimirhasko@gmail.com>
Co-authored-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>
Co-committed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>

metadata.yaml

@@ -370,6 +370,12 @@ categories:
           type: tool-guide
           pdf_name: obs-tool-guide
           hc_location: browsertg/obs
+        - html_location: docs/obs/pfs
+          rst_location: doc/pfs/source
+          title: Parallel File System (PFS)
+          type: pfs
+          pdf_name: obs-pfs
+          hc_location: pfs/obs
         - html_location: docs/obs/api-swift
           rst_location: doc/swiftapi/source
           title: API Reference (Swift)
@@ -686,6 +692,12 @@ categories:
           type: umn
           pdf_name: ma-umn
           hc_location: usermanual/ma
+        - html_location: docs/modelarts/sdk-ref
+          rst_location: doc/sdk-ref/source
+          title: ModelArts Software Development Kit (ModelArts SDK)
+          type: sdk-ref
+          pdf_name: ma-sdk-ref
+          hc_location: sdk/ma
       teams:
         - name: docs-bigdata-ai-rw
           permission: write
@@ -913,6 +925,25 @@ categories:
         - name: docs-database-rw
           permission: write
       repository: docs/distributed-cache-service
+    - service_title: Distributed Database Middleware
+      service_type: ddm
+      docs:
+        - html_location: docs/ddm/api-ref
+          rst_location: api-ref/source
+          title: API Reference
+          type: api-ref
+          pdf_name: ddm-api-ref
+          hc_location: api/ddm
+        - html_location: docs/ddm/umn
+          rst_location: umn/source
+          title: User Guide
+          type: umn
+          pdf_name: ddm-umn
+          hc_location: usermanual/ddm
+      teams:
+        - name: docs-database-rw
+          permission: write
+      repository: docs/distributed-database-middleware
     - service_title: Document Database Service
       service_type: dds
       docs: