fix trivial typo in scala snippet (#303)

darrenjw · web-flow · commit d175452215af · 2023-01-02T21:12:51.000+02:00
diff --git a/src/content/3.5/code/scala/snippet30.scala b/src/content/3.5/code/scala/snippet30.scala
@@ -1 +1 @@
-def getChar: Unit => IO[Unit]
+def getChar: Unit => IO[Char]
