Update doc/stringio/each_line.md

BurdetteLamar · kou · web-flow · commit fca8dc95d75d · 2025-11-04T19:45:42.000-06:00
Co-authored-by: Sutou Kouhei &lt;kou@cozmixng.org&gt;
diff --git a/doc/stringio/each_line.md b/doc/stringio/each_line.md
@@ -128,7 +128,6 @@ strio.each_line {|line| p line }
 
 Output:
 
-```ruby
 "んにちは"
 "\x82\x93にちは"
 "\x93にちは"
