[PATCH v2] docs: arm64: Fix typo "initalised" in booting.rst

Correct the misspelling "initalised" in the arm64 booting document.

v1 changed it to "initialized", which quietly moved the file from
British to American spelling.  Randy Dunlap pointed out that
doc-guide/checkpatch.rst asks that both spellings be left alone, so
this uses "initialised" and only fixes the missing "i".

checkpatch.pl suggested "initialized" because scripts/spelling.txt maps
these two entries to the American form; that is addressed separately.

Only the documentation text changes.

Assisted-by: Cursor:claude-opus-5
Signed-off-by: Hemanth Selam <redacted>
---
 Documentation/arch/arm64/booting.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/arch/arm64/booting.rst b/Documentation/arch/arm64/booting.rst
index 13ef311dace8..891fd22f7229 100644
--- a/Documentation/arch/arm64/booting.rst
+++ b/Documentation/arch/arm64/booting.rst

@@ -588,7 +588,7 @@ following manner:
 
 - CPUs with a "spin-table" enable-method must have a 'cpu-release-addr'
   property in their cpu node.  This property identifies a
-  naturally-aligned 64-bit zero-initalised memory location.
+  naturally-aligned 64-bit zero-initialised memory location.
 
   These CPUs should spin outside of the kernel in a reserved area of
   memory (communicated to the kernel by a /memreserve/ region in the