[DOCS]: Adding curl as prerequisite for installation

[Viveksati5143]

Describe your use-case which is not covered by existing documentation.

Keeping in mind https://github.com/jenkins-infra/jenkins.io/pull/6633 suggests for a 'curl' to 'wget' change, I suggest to add 'curl' as a prerequisite for installation in linux as It doesn't come pre-installed with linux & user has to manually install it using sudo snap install curl for the latest version.

Reference any relevant documentation, other materials or issues/pull requests that can be used for inspiration.

Should I create a pr for the same?

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