[PATCH 4/4] doc/cgroup: Fix title underline length

[Maxime Ripard]

Commit

Commit b168ed458dde ("kernel/cgroup: Add "dmem" memory accounting
cgroup") introduced a new documentation file, with a shorter than
expected underline. This results in a documentation build warning. Fix
that underline length.

Fixes: b168ed458dde ("kernel/cgroup: Add "dmem" memory accounting cgroup")
Reported-by: Stephen Rothwell <sfr at canb.auug.org.au>
Closes: https://lore.kernel.org/r/20250113154611.624256bf@canb.auug.org.au/
Signed-off-by: Maxime Ripard <mripard at kernel.org>
---
 Documentation/core-api/cgroup.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/core-api/cgroup.rst b/Documentation/core-api/cgroup.rst
index 8696e9513f51..734ea21e1e17 100644
--- a/Documentation/core-api/cgroup.rst
+++ b/Documentation/core-api/cgroup.rst
@@ -1,9 +1,9 @@
 ==================
 Cgroup Kernel APIs
 ==================
 
 Device Memory Cgroup API (dmemcg)
-=========================
+=================================
 .. kernel-doc:: kernel/cgroup/dmem.c
    :export:
 
-- 
2.47.1