fix(tree): correct some typos

found using codespell (https://github.com/codespell-project/codespell).

Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Change-Id: I1bfa797e3460adddeefa916bb68e22beddaf6373
diff --git a/services/std_svc/spm/spm_mm/spm_mm_main.c b/services/std_svc/spm/spm_mm/spm_mm_main.c
index 8525cd2..1ff7bb7 100644
--- a/services/std_svc/spm/spm_mm/spm_mm_main.c
+++ b/services/std_svc/spm/spm_mm/spm_mm_main.c
@@ -254,7 +254,7 @@
 	/*
 	 * The current secure partition design mandates
 	 * - at any point, only a single core can be
-	 *   executing in the secure partiton.
+	 *   executing in the secure partition.
 	 * - a core cannot be preempted by an interrupt
 	 *   while executing in secure partition.
 	 * Raise the running priority of the core to the