add HTML5 doctype to all tests

[dygraphs.git] / tests / reverse-y-axis.html
diff --git a/tests/reverse-y-axis.html b/tests/reverse-y-axis.html

index 3a5240d..3e134d7 100644 (file)
--- a/tests/reverse-y-axis.html
+++ b/tests/reverse-y-axis.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
  <html>
    <head>
      <title>reverse y-axis</title>