doc: sfp-phylink: correct code indentation

Using vim to edit the phylink documentation reveals some mistakes due
to the "invisible" pythonesque white space indentation that can't be
seen with other editors. Fix it.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/networking/sfp-phylink.rst

@@ -154,11 +154,11 @@ this documentation.
 		return phylink_ethtool_ksettings_get(priv->phylink, cmd);
 	}
 
-7. Replace the call to:
+7. Replace the call to::
 
 	phy_dev = of_phy_connect(dev, node, link_func, flags, phy_interface);
 
-   and associated code with a call to:
+   and associated code with a call to::
 
 	err = phylink_of_phy_connect(priv->phylink, node, flags);