[PATCH] Documentation: PM: Fix runtime_pm.rst markdown syntax

[Yiwei Lin]

The '7. Generic subsystem callbacks' should be
a section title, but the markdown syntax now is wrong to show
this as expected. Fix it so we can to link the chapter
at docs.kernel.org correctly.

Signed-off-by: Yiwei Lin <s921975628@xxxxxxxxx>
---
 Documentation/power/runtime_pm.rst | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/power/runtime_pm.rst b/Documentation/power/runtime_pm.rst
index 65b86e487..82bc76d3d 100644
--- a/Documentation/power/runtime_pm.rst
+++ b/Documentation/power/runtime_pm.rst
@@ -730,6 +730,7 @@ out the following operations:
     for it, respectively.
 
 7. Generic subsystem callbacks
+==============================
 
 Subsystems may wish to conserve code space by using the set of generic power
 management callbacks provided by the PM core, defined in
-- 
2.34.1