[Documentation Update][Installation ReadMe]: Some commands are not working successfully

[josephjacobmorris]

Issue Description:
On following the installation steps in the readme for "Installation steps for Strato"

sudo apt-get update && sudo apt-get install -y git
git clone https://github.com/sodafoundation/installer.git
git checkout 1.8.0 # you may choose specific release version also
cd installer/ansible
chmod +x install_dependencies.sh && source install_dependencies.sh
export PATH=$PATH:/home/$USER/.local/bin

section. The git checkout 1.8.0 is not working. The reason being

• the cd installer/ansible should be moved above the git checkout .....
• the correct version tag is v1.8.0 v1.8.0
  so the command should be git checkout v1.8.0

A similar issue might be also

• be present in the "Installation steps for Delfin"

Why this issue to fixed / feature is needed(give scenarios or use cases):
This issue needs to be handled as the soda common installer is used by the new users and will be a barrier for them if there are issues in the ReadMe documentation

How to reproduce, in case of a bug:

Documentation Issue

Other Notes / Environment Information: (Please give the env information, log link or any useful information for this issue)

• NA

[Mys7erio]

I opened a PR and mentioned this issue. Visit #513 for more updates