[DOCS] Remove duplicate number sign

Also fixes a non-existing link that is generated:
https://forge.typo3.org/issues/#93436 becomes
https://forge.typo3.org/issues/93436

Releases: main, 11.5
Resolves: #97617
Change-Id: Ic30261223d0cbe5d48a2e88fa87713ba3a698db2
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/74616


Tested-by: core-ci <typo3@b13.com>
Tested-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Oliver Bartsch <bo@cedev.de>

typo3/sysext/core/Documentation/Changelog/11.4/Feature-90197-IntroduceCacheFlushConsoleCommand.rst

@@ -40,7 +40,7 @@ updates, in order for content changes to become active.
 TYPO3 caches can now be flushed in release postparatory steps. The integrator
 may decide to flush all caches (common practice with `EXT:typo3_console`) or
 may alternatively flush selected groups (e.g. 'pages') in case the `cache:warmup`
-(see :issue:`#93436`) command is used as companion in release preparatory steps.
+(see :issue:`93436`) command is used as companion in release preparatory steps.
 
 Deployment steps could then be: