[jaeger-operator] fix config table in jaeger-operator README.md

[mavbozo]

What this PR does

Configuration table display is broken in jaeger-operator README.md. This PR fixes the markdown table formatting.

Checklist

• [ V] DCO signed
• [ V] Commits are GPG signed
• [ ] Chart Version bumped
• [ V] Title of the PR starts with chart name ([jaeger] or [jaeger-operator])
• [ ] README.md has been updated to match version/contain new values

[batazor]

@mavbozo That's great. Thank you. Can we do a left alignment? I think that would be a more appropriate option.

[mavbozo]

@batazor Got it. I've made the table content left aligned.