patch 9.1.0747: various typos in repo found

Problem:  various typos in repo found
Solution: Fix typos (zeertzjq)

closes: #15749

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/option.c b/src/option.c
index 4ee8d25..ee9502a 100644
--- a/src/option.c
+++ b/src/option.c
@@ -186,7 +186,7 @@
 	    item = alloc(itemsize);
 	    if (item != NULL)
 	    {
-		// add a preceeding comma as a separator after the first item
+		// add a preceding comma as a separator after the first item
 		size_t	itemseplen = (ga.ga_len == 0) ? 0 : 1;
 		size_t	itemlen;