Use single backticks in snapshot helper docstrings

Pre-commit's no-double-backticks-in-docstrings hook (and AGENTS.md)
require Markdown inline code, not reStructuredText.

Author: manzt

marimo/_server/scratchpad.py

@@ -193,8 +193,8 @@ def snapshot_for_scratchpad(
 ) -> tuple[tuple[NotebookCell, ...], CellOutputs]:
     """Snapshot the notebook document and per-cell outputs for code_mode.
 
-    Returned by both ``/api/execute`` and the MCP ``execute_code`` tool
-    and passed on ``ExecuteScratchpadCommand`` so ``cm.get_context()``
+    Returned by both `/api/execute` and the MCP `execute_code` tool
+    and passed on `ExecuteScratchpadCommand` so `cm.get_context()`
     can expose cells and their last outputs.
     """
     cell_ids = session.document.cell_ids

tests/_server/test_scratchpad.py

@@ -54,7 +54,7 @@ def _parse_sse(sse: str) -> tuple[str, dict[str, object]]:
 
 
 class TestSnapshotForScratchpad:
-    """Snapshot helper shared by ``/api/execute`` and MCP ``execute_code``."""
+    """Snapshot helper shared by `/api/execute` and MCP `execute_code`."""
 
     def test_packages_document_and_outputs(self) -> None:
         from marimo._ast.cell import CellConfig