remove implicit code tags .replace("::\n\n.. code-block", "\n\n.. code-block")

doc/en/doctest.rst

@@ -191,7 +191,7 @@ namespace in which your doctests run. It is intended to be used within
 your own fixtures to provide the tests that use them with context.
 
 ``doctest_namespace`` is a standard ``dict`` object into which you
-place the objects you want to appear in the doctest namespace::
+place the objects you want to appear in the doctest namespace
 
 .. code-block:: python
 
@@ -203,7 +203,7 @@ place the objects you want to appear in the doctest namespace::
     def add_np(doctest_namespace):
         doctest_namespace["np"] = numpy
 
-which can then be used in your doctests directly::
+which can then be used in your doctests directly
 
 .. code-block:: python
 
@@ -225,7 +225,7 @@ Skipping tests dynamically
 
 .. versionadded:: 4.4
 
-You can use ``pytest.skip`` to dynamically skip doctests. For example::
+You can use ``pytest.skip`` to dynamically skip doctests. For example
 
 .. code-block:: text