adapt default delim

In mkdocs, a new paragraph will only appear if two newline characters are used, resulting in a completely empty line.

Author: thomasmarwitz

src/mkdocstrings_handlers/python/handler.py

@@ -113,7 +113,7 @@ class PythonHandler(BaseHandler):
         "members": None,
         "inherited_members": False,
         "docstring_inherit_strategy": rendering.DocstringInheritStrategy.default.value,
-        "docstring_merge_delimiter": "\n",
+        "docstring_merge_delimiter": "\n\n",
         "filters": ["!^_[^_]"],
         "annotations_path": "brief",
         "preload_modules": None,

src/mkdocstrings_handlers/python/rendering.py

@@ -425,7 +425,7 @@ def do_optionally_inherit_docstrings(
     objects: dict[str, Object | Alias],
     *,
     docstring_inherit_strategy: str = DocstringInheritStrategy.default.value,
-    docstring_merge_delimiter: str = "\n",
+    docstring_merge_delimiter: str = "\n\n",
 ) -> dict[str, Object | Alias]:
     """Optionally inherit docstrings for members in the given .