Reset Webhook URL button is in the incorrect place

Summary

(Summarize the bug encountered concisely)

At some point the button to reset the Webhook URL on Settings > Operations > Incidents was shifted to the right. It was meant to be on the left, just under the field, to match the similar button in the Alerts section.

Steps to reproduce

(How one can reproduce the issue - this is very important) Can see this in the Tanuki project, in Settings > Operations, under the Incidents tab.

Example Project

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What is the current bug behavior?

(What actually happens) Button is floating to the right

What is the expected correct behavior?

(What you should see instead) Button is left-aligned to match what's in the alerts section

Relevant logs and/or screenshots

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Output of checks

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Results of GitLab environment info

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Results of GitLab application Check

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sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production SANITIZE=true)
(we will only investigate if the tests are passing)

Possible fixes

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