[PATCH v2] docs: bcachefs: fix typo in idle_work documentation

Fix minor spelling mistake in idle_work:

- heirarchy -> hierarchy

Changes in v2:
- Dropped cgroup, idle changes (already being fixed)
- Dropped xfs changes (already fixed)
- Only keep bcachefs doc fix

Link: 
https://lore.kernel.org/linux-doc/23de3jgp44vih5g6hjgc2ji6momi5t3w7rfkm5mgtajicbbg7a@7r5hgt5e7eir/
Based on v6.17-rc2.

Reviewed-by: Randy Dunlap <[email protected]>
Signed-off-by: Sahil Chandna <[email protected]>
---
Documentation/filesystems/bcachefs/future/idle_work.rst | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Documentation/filesystems/bcachefs/future/idle_work.rst 
b/Documentation/filesystems/bcachefs/future/idle_work.rst
index 59a332509dcd..f1202113dde0 100644
--- a/Documentation/filesystems/bcachefs/future/idle_work.rst
+++ b/Documentation/filesystems/bcachefs/future/idle_work.rst
@@ -11,10 +11,10 @@ idle" so the system can go to sleep. We don't want 
to be dribbling out
background work while the system should be idle.
The complicating factor is that there are a number of background tasks, 
which
-form a heirarchy (or a digraph, depending on how you divide it up) - one
+form a hierarchy (or a digraph, depending on how you divide it up) - one
background task may generate work for another.
-Thus proper idle detection needs to model this heirarchy.
+Thus proper idle detection needs to model this hierarchy.
- Foreground writes
- Page cache writeback
@@ -51,7 +51,7 @@ IDLE REGIME
When the system becomes idle, we should start flushing our pending work
quicker so the system can go to sleep.
-Note that the definition of "idle" depends on where in the heirarchy a task
+Note that the definition of "idle" depends on where in the hierarchy a task
is - a task should start flushing work more quickly when the task above 
it has
stopped generating new work.

-- 
2.34.1