[PATCH 22/25] Documentation/bpf/index.rst: fix sphinx warning:

[Daniel W. S. Almeida]

From: "Daniel W. S. Almeida" <dwlsalmeida@xxxxxxxxx>

Fix the following warning

Documentation/bpf/ringbuf.rst: WARNING: document isn't
included in any toctree

Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@xxxxxxxxx>
---
 Documentation/bpf/index.rst | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/bpf/index.rst b/Documentation/bpf/index.rst
index 38b4db8be7a2b..0f60b95e83c40 100644
--- a/Documentation/bpf/index.rst
+++ b/Documentation/bpf/index.rst
@@ -58,6 +58,14 @@ Testing and debugging BPF
    s390
 
 
+Other
+=====
+
+.. toctree::
+   :maxdepth: 1
+
+   ringbuf
+
 .. Links:
 .. _Documentation/networking/filter.rst: ../networking/filter.txt
 .. _man-pages: https://www.kernel.org/doc/man-pages/
-- 
2.27.0