Solved
Hi Ivan,
You can change those Page Names before they appear in your Pages Report with the help of Processing Rules (see screenshot). You can find the Processing Rules tool here: Admin > Report Suites > Edit Settings > General > Processing Rules.
You need to do a small exam to use it: https://helpx.adobe.com/analytics/kb/processing-rules-authorization.html
I've used it a lot to clean up page names
Best,
-Harry