Fix variable name

[tushar5526]

https://github.com/samagra-comms/utils/blob/release-v2.0.0/src/main/java/com/uci/utils/BotService.java#L410

[tushar5526]

samagra-comms/docker-deploy#34 (comment)

[RyanWalker277]

hey @tushar5526, removing the word VAULT in the .env would result some of the dependent services to break. I think we would need to identify all the services which use this secret. Would need to first make a PR to change the vars in the service's code and then adjust the same in the .env. I would need some context about the dependent services before picking this up.

cc- @ChakshuGautam

[tushar5526]

Correct, skip that for now.