docs: fix Prompt_Node and Pipelines API reference (#4858)

* fix: Prompt_Node and Pipelines API reference

* deleted invocation layers

docs/pydoc/config/pipelines.yml

@@ -6,6 +6,7 @@ loaders:
 processors:
   - type: filter
     expression: "name not in ['_HaystackBeirRetrieverAdapter', '_RayDeploymentWrapper']"
+  - type: filter
     documented_only: true
     do_not_filter_modules: false
     skip_empty_modules: true

docs/pydoc/config/prompt-node.yml

@@ -1,7 +1,13 @@
 loaders:
   - type: python
     search_path: [../../../haystack/nodes/prompt]
-    modules: ["prompt_node"]
+    modules: 
+      [
+        "prompt_node",
+        "prompt_model",
+        "prompt_template",
+        "shapers",
+      ]
     ignore_when_discovered: ["__init__"]
 processors:
   - type: filter