Fix command binding for showing span configuration

[jellonek]

Both documentation and function definition are showing that this command was supposed to be in the shape as fixed by this PR.

Signed-off-by: Piotr Skamruk [email protected]

[edwarnicke]

Thank you so much for your interest! VPP actually takes patches at https://gerrit.fd.io/

git clone https://gerrit.fd.io/r/vpp

I would then recommend using git review to contribute patches.