Fix a typo in Chart.yaml name field.

[eli-halych]

It is supposed to be kubenurse instead of the current kubeburse chart name.

[coveralls]

Pull Request Test Coverage Report for Build 1794745828

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+1.3%) to 80.603%

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Totals
Change from base Build 1727633952:	1.3%
Covered Lines:	428
Relevant Lines:	531

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💛 - Coveralls

[djboris9]

Good catch!