fortune: add more information link (#5531)

* fortune: add link

* fortune: add link to german and spanish translation

pages/common/fortune.md

@@ -1,6 +1,7 @@
 # fortune
 
 > Print a random quotation (fortune-cookie style).
+> More information: <https://man.archlinux.org/man/fortune.6>.
 
 - Print a quotation: