[GNC] Update Online Quotes Section in Wiki

[Rainer Dorsch]

Hi,

I edited the Trouble Shooting section on the Online Quotes page in the Wiki.

https://wiki.gnucash.org/wiki/Online_Quotes

Since I am not a power user of gnucash, I would appreciate if somebody could 
review my changes

https://wiki.gnucash.org/wiki/index.php?
title=Online_Quotes&type=revision&diff=20374&oldid=20363 

Feel free to update wording and content if needed.

Many thanks
Rainer

-- 
Rainer Dorsch
http://bokomoko.de/