Update sig-docs-leads in enhancements/OWNERS_ALIASES

[reylejano]

In sig-docs-leads in k/enhancement/OWNERS_ALIASES , this PR removes Karen Bradshaw, Taylor Dolezal, and Tim Bannister who have stepped down from the tech lead role Follow up to comment in https://github.com/kubernetes/enhancements/pull/4630#discussion_r1600072255

/cc @natalisucks @divya-mohan0209

[natalisucks]

/lgtm

[reylejano]

/assign @mrbobbytables

[sftim]

/lgtm

[k8s-ci-robot]

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