chore: fix typo in CODEOWNERS (assets-controller -> assets-controllers)

[ccharly]

Explanation

Found the same typo than last time, but on another section of the CODEOWNERS.

Spotted while doing this release:

• Release 270.0.0 #5058

References

Similar to:

• chore: fix typo in CODEOWNERS (assets-controller -> assets-controllers) #5029

Changelog

N/A

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've highlighted breaking changes using the "BREAKING" category above as appropriate
• I've prepared draft pull requests for clients and consumer packages to resolve any breaking changes

[mcmire]

Makes sense!