Update CHANGELOG.md

[hdamker]

What type of PR is this?

Add one of the following kinds:

• correction

What this PR does / why we need it:

Updated wrong link in CHANGELOG.md (release tag is r1.1, without "rc")

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	2		0	0.03s
✅ OPENAPI	spectral	2		0	4.04s
✅ REPOSITORY	git_diff	yes		no	0.05s
✅ REPOSITORY	secretlint	yes		no	1.05s
✅ YAML	yamllint	2		0	0.89s

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LGTM

Thanks @hdamker