netlink: specs: rt_addr: fix get multi command name

Command names should match C defines, codegens may depend on it.

Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Fixes: 4f280376e5 ("selftests/net: Add selftest for IPv4 RTM_GETMULTICAST support")
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20250403013706.2828322-3-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Documentation/netlink/specs/rt_addr.yaml

@@ -169,7 +169,7 @@ operations:
           value: 20
           attributes: *ifaddr-all
     -
-      name: getmaddrs
+      name: getmulticast
       doc: Get / dump IPv4/IPv6 multicast addresses.
       attribute-set: addr-attrs
       fixed-header: ifaddrmsg

tools/testing/selftests/net/rtnetlink.py

@@ -12,7 +12,7 @@ def dump_mcaddr_check(rtnl: RtnlAddrFamily) -> None:
     At least the loopback interface should have this address.
     """
 
-    addresses = rtnl.getmaddrs({"ifa-family": socket.AF_INET}, dump=True)
+    addresses = rtnl.getmulticast({"ifa-family": socket.AF_INET}, dump=True)
 
     all_host_multicasts = [
         addr for addr in addresses if addr['ifa-multicast'] == IPV4_ALL_HOSTS_MULTICAST