[BUGFIX] Reenable input field for page ID when setting a link via RTE

Remove obsolete dot to make following setting work again:
RTE.default.buttons.link.pageIdSelector.enabled = 1

This now renders an input field for a page ID again when setting
a link via RTE.

Resolves: #88656
Releases: master, 9.5
Change-Id: I25a9cd20fd269f3f4f683ee6474f424897601a86
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/61194


Tested-by: Daniel Goerz <daniel.goerz@posteo.de>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Susanne Moog <look@susi.dev>
Reviewed-by: Daniel Goerz <daniel.goerz@posteo.de>
Reviewed-by: Susanne Moog <look@susi.dev>