[DOCS] Fix typo in deprecation rst for 57594

Resolves: #95205
Releases: master, 10.4
Change-Id: Ibee44bc384105955248ef7dff04b1c1ec96b8d2b
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/71049


Tested-by: core-ci <typo3@b13.com>
Tested-by: Björn Jacob <bjoern.jacob@tritum.de>
Tested-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: Oliver Bartsch <bo@cedev.de>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Björn Jacob <bjoern.jacob@tritum.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Benni Mack <benni@typo3.org>

typo3/sysext/core/Documentation/Changelog/9.0/Deprecation-57594-OptimizeReflectionServiceCacheHandling.rst

@@ -37,6 +37,6 @@ Migration
 =========
 
 Use the class :php:`ReflectionService` as API which will be automatically initialized on
-nstantiation.
+instantiation.
 
 .. index:: PHP-API, FullyScanned, ext:extbase