Merge pull request #2107 from adpi2/fix-page

Fix page number in the migration guide

Author: Philippus

_overviews/scala3-migration/external-resources.md

@@ -2,7 +2,7 @@
 title: External Resources
 type: section
 description: This section lists external resources about the migration to Scala 3.
-num: 26
+num: 27
 previous-page: plugin-kind-projector
 next-page:
 ---