add HTML5 doctype to all tests

[dygraphs.git] / tests / missing-data.html
diff --git a/tests/missing-data.html b/tests/missing-data.html

index 9463509..def8dd5 100644 (file)
--- a/tests/missing-data.html
+++ b/tests/missing-data.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
  <html>
    <head>
      <title>missing data</title>