doc: fix typo RFC7572 to RFC7752

Signed-off-by: ponedo <2534164734@qq.com>

diff --git a/doc/developer/link-state.rst b/doc/developer/link-state.rst
index 2072595e36dac8e4969842a8002aa4a5be2a3e28..aaa253de94325068b06006ca778b48384b817e57 100644 (file)
--- a/doc/developer/link-state.rst
+++ b/doc/developer/link-state.rst
@@ -9,7 +9,7 @@ build and manage a Traffic Engineering Database for the various FRR daemons.
 This API has been designed for several use cases:
 
 - BGP Link State (BGP-LS): where BGP protocol need to collect the link state
-  information from the routing daemons (IS-IS and/or OSPF) to implement RFC7572
+  information from the routing daemons (IS-IS and/or OSPF) to implement RFC7752
 - Path Computation Element (PCE): where path computation algorithms are based
   on Traffic Engineering Database
 - ReSerVation Protocol (RSVP): where signaling need to know the Traffic