net: Fix non-kernel-doc comments with kernel-doc start marker

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 29aa0c8..d902da9 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -3310,8 +3310,7 @@
 
 #endif
 
-/**
- * Each Responder maintains up to two secret values concurrently for
+/* Each Responder maintains up to two secret values concurrently for
  * efficient secret rollover.  Each secret value has 4 states:
  *
  * Generating.  (tcp_secret_generating != tcp_secret_primary)