[examples] Change minibrowser title and brief doc text


Pick-to: 6.12
Task-number: QTBUG-149209
Change-Id: If811ef0499bf5714eb3471a84d8062cf7b1ab8e6
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
commit47efc58b9f4b4ccae0f1b01fcd1c198e82879b02
parent394d096f476f59f30d628a4b1b32db9da08c2fa2
authorMichal Klocek <michal.klocek@qt.io>
committerMichal Klocek <michal.klocek@qt.io>
commit timeThu, 10 Sep 2026 17:48:48 +0000