format code snippet correctly

docs/code_from_chapters/osoh.rst

@@ -345,7 +345,7 @@ To get an overview on publishing datasets, however, you best go to :ref:`shareth
 Another convenient way is `Gin <https://gin.g-node.org>`_, a free hosting service for DataLad datasets.
 
 First, you need to head over to `gin.g-node.org <https://gin.g-node.org>`__, log in, and upload an :term:`SSH key`. Then, under your user account, create a new repository, and copy it's SSH URL.
-A step by step instruction with screenshots is in the section :ref:`gin`.
+A step by step instruction with screenshots is in the section :ref:`gin`::
 
    datalad create-sibling-gin \
     example-analysis \