Add missing v in migrations.go (#25252)

Author: yp05327

models/migrations/migrations.go

@@ -494,9 +494,9 @@ var migrations = []Migration{
 	NewMigration("Add is_internal column to package", v1_20.AddIsInternalColumnToPackage),
 	// v257 -> v258
 	NewMigration("Add Actions Artifact table", v1_20.CreateActionArtifactTable),
-	// v258 -> 259
+	// v258 -> v259
 	NewMigration("Add PinOrder Column", v1_20.AddPinOrderToIssue),
-	// v259 -> 260
+	// v259 -> v260
 	NewMigration("Convert scoped access tokens", v1_20.ConvertScopedAccessTokens),
 
 	// Gitea 1.20.0 ends at 260