[PATCH 4/5] docs: networking: nfc: fix code block syntax

[Robert Schwebel <r.schwebel@pengutronix.de>]

Silence this warning:

Documentation/networking/nfc.rst:113: WARNING: Definition list ends without
a blank line; unexpected unindent.

Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de>
---
 Documentation/networking/nfc.txt | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/Documentation/networking/nfc.txt b/Documentation/networking/nfc.txt
index af69b3a90eaa..63e483f6afb4 100644
--- a/Documentation/networking/nfc.txt
+++ b/Documentation/networking/nfc.txt
@@ -105,12 +105,14 @@ LOW-LEVEL DATA EXCHANGE:
 The userspace must use PF_NFC sockets to perform any data communication with
 targets. All NFC sockets use AF_NFC:
 
-struct sockaddr_nfc {
-       sa_family_t sa_family;
-       __u32 dev_idx;
-       __u32 target_idx;
-       __u32 nfc_protocol;
-};
+.. code-block:: none
+
+        struct sockaddr_nfc {
+               sa_family_t sa_family;
+               __u32 dev_idx;
+               __u32 target_idx;
+               __u32 nfc_protocol;
+        };
 
 To establish a connection with one target, the user must create an
 NFC_SOCKPROTO_RAW socket and call the 'connect' syscall with the sockaddr_nfc
-- 
2.24.0