Documentation: tipc: fix formatting issue in tipc.rst

The hyphen is removed to have the same style as the others.

Fixes: 09ef17863f37 ("Documentation: add more details in tipc.rst")
Signed-off-by: tuqiang <[e-mail]>
Signed-off-by: Jiang Kun <[e-mail]>
Reviewed-by: Simon Horman <[e-mail]>
Cc: xu xin <[e-mail]>
Cc: David S. Miller <[e-mail]>
Cc: Eric Dumazet <[e-mail]>
Cc: Jakub Kicinski <[e-mail]>
Cc: Paolo Abeni <[e-mail]>
Cc: Jonathan Corbet <[e-mail]>
Cc: Jon Maloy <[e-mail]>
Cc: Xin Long <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Paolo Abeni <[e-mail]>

Documentation/networking/tipc.rst

···
 
 - How to contribute to TIPC:
 
-- http://tipc.io/contacts.html
+  http://tipc.io/contacts.html
 
 - More details about TIPC specification: