[Docs] Fix OSL pdf
[Docs] Fix OSL pdf

Fix link to latest version
of Open Source Lincenses PDF

Resolves: LE-5521
Change-Id: I543bec3d98c0ca95cf513298f47f03813535fa06

legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af,legatoproject/legato-af