Broken/Missing Setup Doc Links

[ghost]

Setup Doc links are not available or there are broken links

Expected Behavior

User should be able to navigate to the doc links

Current Behavior

User is not able to navigate to the doc links due to broken links or unavailable links

Possible Solution

Please update the doc links

Steps to Reproduce

Navigate to

1. https://github.com/hyperledger/cello/blob/master/docs/tutorial.md
2. https://github.com/hyperledger/cello/blob/master/docs/setup/server.md#21-clone-source-code
3. https://github.com/hyperledger/cello/blob/master/docs/setup/server.md#22-prepare-environment
4. https://github.com/hyperledger/cello/blob/master/docs/setup/server.md#23-start-service

[Roshan13046]

I would like to fix this issue. Can I go ahead?