fix(ffa): typo in comment

Change-Id: Ia36c677665a7462f4fc37695efd8cc079736e963
Signed-off-by: Federico Recanati <federico.recanati@arm.com>
diff --git a/inc/vmapi/hf/ffa.h b/inc/vmapi/hf/ffa.h
index e7a626c..0440ef8 100644
--- a/inc/vmapi/hf/ffa.h
+++ b/inc/vmapi/hf/ffa.h
@@ -664,7 +664,7 @@
 	 */
 	uint32_t receiver_count;
 	/**
-	 * An array of `attribute_count` endpoint memory access descriptors.
+	 * An array of `receiver_count` endpoint memory access descriptors.
 	 * Each one specifies a memory region offset, an endpoint and the
 	 * attributes with which this memory region should be mapped in that
 	 * endpoint's page table.