Fix markdown rendering of titles in recipebrowser

Apparently not having a newline before each recipe title, prevented the
markdown JS renderer from rendering the titles properly, instead the
titles wee unformatted and also displayed the = signs.

Add the new lines.

Change-Id: I8176e8f3029ca2e80114d6555bbb73696ba51509
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>