Add tip for `qs` parameter of hook_civicrm_links.md. Fixed misspelling.
Added !!!tip
for the qs
parameter. (Learned about this feature through trial and error, so thought it would be good to document for others' benefit.)
The markdown for !!!tip
does not render as expected in the preview, but I think the syntax is correct. I don't know if the syntax is supported within the bullet list, so I put it at the bottom.