[PATCH] Minor fixes for reloptions tests

I have a small fixes for already committed reloption test patch
(https://www.postgresql.org/message-id/2615372.orqtEn8VGB@x200m)

First one is missing tab symbol where it should be.

The second is a comment. "The OIDS option is not stored" is not quite correct. 
They are stored, but not as reloption. I've added this notion there...


-- 
Do code for fun.