Fix Cisco Umbrella & Cloudflare changelog

[legoguy1000]

What does this PR do?

Fixes the changelog entries for Cisco Umbrella and Cloudflare. When Cisco Umbrella was merged, I accidently updated the Cloudflare changelog.

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• If I'm introducing a new feature, I have modified the Kibana version constraint in my package's manifest.yml file to point to the latest Elastic stack release (e.g. ^7.13.0).

Author's Checklist

• [ ]

How to test this PR locally

Related issues

• Relates [Cisco Umbrella] Add Cisco Umbrella package #1646

Screenshots

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• Start Time: 2021-09-14T11:45:19.769+0000

• Duration: 12 min 6 sec

• Commit: 8fe6543

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Test	Results
Failed	0
Passed	98
Skipped	0
Total	98

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