Use the right lexer for these examples
diff --git a/docs/contributing.rst b/docs/contributing.rst
index 8f6a178..1f4c1ca 100644
--- a/docs/contributing.rst
+++ b/docs/contributing.rst
@@ -81,7 +81,7 @@
can be installed in a `virtualenv`_ using `pip`_. Once you've installed the
dependencies, install ``cryptography`` in ``editable`` mode. For example:
-.. code-block:: sh
+.. code-block:: console
# Create a virtualenv and activate it
$ pip install --requirement dev-requirements.txt
@@ -96,7 +96,7 @@
designed to be run using `pytest`_. `pytest`_ will discover the tests
automatically, so all you have to do is:
-.. code-block:: sh
+.. code-block:: console
$ py.test
...
@@ -108,7 +108,7 @@
For this we use `tox`_, which will automatically create a `virtualenv`_ for
each supported Python version and run the tests. For example:
-.. code-block:: sh
+.. code-block:: console
$ tox
...
@@ -131,7 +131,7 @@
Use `tox`_ to build the documentation. For example:
-.. code-block:: sh
+.. code-block:: console
$ tox -e docs
...