doc: use correct specifier for code block

Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>

diff --git a/doc/user/zebra.rst b/doc/user/zebra.rst
index 14b78f8776307f12764fb5241b65b1ab02352ab4..c509eb8583ae89261379d3722c69f4a2d1e04f3c 100644 (file)
--- a/doc/user/zebra.rst
+++ b/doc/user/zebra.rst
@@ -383,7 +383,7 @@ alternate name for default VRF. Then, the default VRF naming will automatically
 be updated with the new name. To illustrate, if you want to recompile with
 `global` value, use the following command:
 
-.. code-block:: linux
+.. code-block:: shell
 
    ./configure --with-defaultvrfname=global