Better installation instruction in release notes
Changed sample download script to use the built in `-o` optoin in `curl` instead of redicrecting stdout's output.
This allows users to prepend `sudo` to the snippet to make it work in common use cases where root permissions are needed to create the output file.
From `curl`:
-o, --output <file>
Write output to <file> instead of stdout.
Signed-off-by: Reut Sharabani <[email protected]>