docs(cmd): update ToggleRecordsMode documentation

Update documentation for ToggleRecordsMode to clarify its behavior with the view
stack.

- Clarify that entering records mode creates a `_Records` view
- Clarify that leaving records mode navigates back to the previous view

Co-Authored-By: fiddlerwoaroof/git-smart-commit (unsloth/gemma-4-26B-A4B-it-GGUF:UD-Q5_K_XL)

src/command/cmd.rs

@@ -1441,9 +1441,9 @@ impl Cmd for TogglePruneEmpty {
     }
 }
 
-/// Toggle between records mode (_Index on Row, _Dim on Column) and
-/// pivot mode (auto-assigned axes). In records mode every cell is shown
-/// as a flat row; in pivot mode the view is a cross-tab.
+/// Toggle between records mode and pivot mode using the view stack.
+/// Entering records mode creates a `_Records` view and switches to it.
+/// Leaving records mode navigates back to the previous view.
 #[derive(Debug)]
 pub struct ToggleRecordsMode;
 impl Cmd for ToggleRecordsMode {