doc: Replace `frr` code highlighting marker to `sh`

No such thing exists.

 /root/frr/doc/user/ospfd.rst:624: WARNING: Cannot analyze code. No Pygments lexer found for "frr".

Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>

diff --git a/doc/user/ospfd.rst b/doc/user/ospfd.rst
index 1ba5af9b1404833129d9c04254b2dcc99debde2b..d61522b051f279988cd086a5b0d74f35e25eab7e 100644 (file)
--- a/doc/user/ospfd.rst
+++ b/doc/user/ospfd.rst
@@ -621,7 +621,7 @@ Interfaces
 
    Example:
 
-   .. code:: frr
+   .. code:: sh
 
       r1(config)#key chain temp
       r1(config-keychain)#key 13