docs: correctly escape when mentioning quarto block

Author: machow

docs/get-started/docstring-examples.qmd

@@ -44,7 +44,7 @@ Below is an example including each.
     quarto syntax:
     note that the "\" should be removed.
     
-    ```\{python}
+    ```{{python}}
     1 + 1
     ```
 ```
@@ -132,4 +132,4 @@ def f():
 
 :::{.callout-note}
 Linking to functions documented outside your package must be configured in the [interlinks filter](./interlinks.qmd).
-:::
+:::