Reword removed judges intro to clarify the real reason entries are kept

Changed both EN and NL introductions to state the entries are kept as a record of what happened to each judge, so people can find out what happened instead of finding no trace. This clarifies the intent beyond just link preservation.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: TomNaessens

en/references/judges/index.md

@@ -140,7 +140,7 @@ It is a Python judge that allows simple input/output tests or more advanced doct
 
 ## Removed judges
 
-These judges have been removed from Dodona. Exercises that use them can no longer be evaluated or opened. We keep their entries here so that existing links to them keep working.
+These judges have been removed from Dodona. Exercises that use them can no longer be evaluated or opened. We keep their entries here as a record, so that anyone wondering what happened to a judge can still find out, instead of finding no trace of it at all.
 
 ### JUnit
 

nl/references/judges/index.md

@@ -142,7 +142,7 @@ Het is een Python judge die eenvoudige input/output tests of meer geavanceerde d
 
 ## Verwijderde judges
 
-Onderstaande judges zijn verwijderd van Dodona. Oefeningen die deze judges gebruiken, kunnen niet meer geëvalueerd of geopend worden. We houden deze vermeldingen bij zodat bestaande links blijven werken.
+Onderstaande judges zijn verwijderd van Dodona. Oefeningen die deze judges gebruiken, kunnen niet meer geëvalueerd of geopend worden. We houden deze vermeldingen bij ter referentie, zodat je later nog kan achterhalen wat er met een judge gebeurd is, in plaats van er geen spoor meer van terug te vinden.
 
 ### JUnit