payloads: Fix typos

Change-Id: Ib7f1ba1766e5c972542ce7571a8aa3583c513823
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38911
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

payloads/libpayload/libc/malloc.c

@@ -318,7 +318,7 @@ void *realloc(void *ptr, size_t size)
 
 struct align_region_t
 {
-	/* If alignment is 0 then the region reqpresents a large region which
+	/* If alignment is 0 then the region represents a large region which
 	 * has no metadata for tracking subelements. */
 	int alignment;
 	/* start in memory, and size in bytes */