Update install command

[ShalmaliCL]

Updated session arg in the below command:

casper-client put-deploy \
--node-address http://95.216.24.237:7777 \
--chain-name casper-test \
--secret-key "/home/ubuntu/secret_key.pem" \
--payment-amount 1000000 \
--session-path "<machine-path>/cep18/target/wasm32-unknown-unknown/release/cep18.wasm"
--session-arg "name='Token test', symbol='TEST', decimals:u8=10, total_supply:u256=1000"

With:

casper-client put-deploy \
--node-address http://95.216.24.237:7777 \
--chain-name casper-test \
--secret-key "/home/ubuntu/secret_key.pem" \
--payment-amount 1000000 \
--session-path "<machine-path>/cep18/target/wasm32-unknown-unknown/release/cep18.wasm" \
--session-arg "name:string='Token test'" \
--session-arg "symbol:string='TEST'" \
--session-arg "total_supply:u256='1000'" \
--session-arg "decimals:u8='10'"