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-rw-r--r--docs/quick_tour/jinja2/hello_world.jinja23
1 files changed, 2 insertions, 1 deletions
diff --git a/docs/quick_tour/jinja2/hello_world.jinja2 b/docs/quick_tour/jinja2/hello_world.jinja2
index e177744b5..7a902dd3a 100644
--- a/docs/quick_tour/jinja2/hello_world.jinja2
+++ b/docs/quick_tour/jinja2/hello_world.jinja2
@@ -1,4 +1,5 @@
-<html xmlns="http://www.w3.org/1999/xhtml">
+<!DOCTYPE html>
+<html lang="en">
<head>
<title>Hello World</title>
</head>