Improve the Raspbian Install Notes
Improve the Raspbian Install Notes

Add some improvements in the Raspbian Install Notes.

Resolves: LE-5335
Change-Id: I1a2b2e1738f1d763fea6eb819a15ddf7ba7f7632

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