Fix using source comment

odersky · odersky · commit 4cd72b7cc713 · 2024-01-31T12:13:25.000+01:00
Detected manually, even though the test as a whole succeeded
diff --git a/tests/neg/i19506.scala b/tests/neg/i19506.scala
@@ -1,4 +1,4 @@
-//> using options "-source:3.4-migration"
+//> using options -source 3.4-migration
 
 trait Reader[T]
 def read[T: Reader](s: String, trace: Boolean = false): T = ???

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-//> using options "-source:3.4-migration"`
	`1`	`+//> using options -source 3.4-migration`
`2`	`2`
`3`	`3`	`trait Reader[T]`
`4`	`4`	`def read[T: Reader](s: String, trace: Boolean = false): T = ???`