Apply suggestion to docs/installation_instructions.rst

docs/installation_instructions.rst

@@ -21,18 +21,17 @@ If you encounter any difficulties while following these instructions,
 please [open an issue following our contact
 guide][https://openappstack.net/contact.html).
 
-Warnings
---------
-
--  OpenAppStack is still under heavy development and is not ready for
-   production use! We anticipate major changes and do not guarantee a
-   data-preserving upgrade path from current installations. However, we
-   encourage you to try OpenAppStack and ask you to `report all issues
-   you encounter <https://openappstack.net/contact.html>`__.
--  When you install OpenAppStack on a server, the installation process
-   will make some substantial changes to the server's configuration, so
-   please do not use a server that functions as anything other than a
-   testing ground.
+.. warning::
+  -  OpenAppStack is still under heavy development and is not ready for
+     production use! We anticipate major changes and do not guarantee a
+     data-preserving upgrade path from current installations. However, we
+     encourage you to try OpenAppStack and ask you to `report all issues
+     you encounter <https://openappstack.net/contact.html>`__.
+  -  When you install OpenAppStack on a server, the installation process
+     will make some substantial changes to the server's configuration, so
+     please do not use a server that functions as anything other than a
+     testing ground.
+
 
 Prerequisites
 -------------