[TASK] Correct link to a 7.6 changelog resource

The link pointing to the positioning of own handlers (a changelog of v7.6)
was missing a version paramater after "core/".

Releases: master
Resolves: #83025
Change-Id: I52d22ad30b4669b2fe59728551a24f761efd423d
Reviewed-on: https://review.typo3.org/54673


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Mathias Brodala <mbrodala@pagemachine.de>
Tested-by: Mathias Brodala <mbrodala@pagemachine.de>
Reviewed-by: Riccardo De Contardi <erredeco@gmail.com>
Tested-by: Riccardo De Contardi <erredeco@gmail.com>
Reviewed-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Tested-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>

typo3/sysext/core/Documentation/Changelog/8.6/Feature-79626-IntegrateRecordLinkHandler.rst

@@ -32,7 +32,7 @@ The following optional configuration is available:
 - :typoscript:`configuration.storagePid = 1`: Let the link browser start with the given page
 - :typoscript:`configuration.pageTreeMountPoints = 123,456`: Mount the given pages instead of the regular page tree
 
-You can position your own handlers in order as defined in https://docs.typo3.org/typo3cms/extensions/core/Changelog/7.6/Feature-66369-AddedLinkBrowserAPIs.html
+You can position your own handlers in order as defined in https://docs.typo3.org/typo3cms/extensions/core/7.6/Changelog/7.6/Feature-66369-AddedLinkBrowserAPIs.html
 
 
 **TypoScript** is used to generate the actual link in the frontend