Fixing broken links in Developer Guides
1. Fixing broken links in Developer guides -> setting up AGL SDK in step 1
2. Renaming files in command line code based on the file downloaded in step 1
3. Putting notes for changing the .sh file in different commands
Bug-AGL: [SPEC-4470]
Signed-off-by: Vinod Ahuja <vahuja@unomaha.edu>
Change-Id: I011b958ebab8319ae5f3b519875abb389615b33c
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/documentation/+/27957
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
ci-image-boot-test: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
Tested-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>