fix: grammar

[wdhdev]

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Description

Fixes the grammar for the no monitors text.

Type of change

Please delete any options that are not relevant.

• Other

Checklist

• My code follows the style guidelines of this project
• I ran ESLint and other linters for modified files
• I have performed a self-review of my own code and tested it
• I have commented my code, particularly in hard-to-understand areas (including JSDoc for methods)
• My changes generates no new warnings
• My code needed automated testing. I have added them (this is optional task)

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[louislam]

Language files cannot be touched in any pull requests, because it will create a big code conflict with Weblate.

Please update it on https://weblate.kuma.pet/projects/uptime-kuma/uptime-kuma/

[Zaid-maker]

Language files cannot be touched in any pull requests, because it will create a big code conflict with Weblate.

Please update it on https://weblate.kuma.pet/projects/uptime-kuma/uptime-kuma/

Yes correct i think u should close it ig!

[chakflying]

• this is not a grammar problem
• there is no point in "fixing" the language key itself