Doc: Fix minor error in ePub (GH-100614)

Fix issue reported https://mail.python.org/archives/list/docs@python.org/message/KE7OIAO53P4XRC4ZOWPDHA63ZQJCHEC3/

diff --git a/Doc/conf.py b/Doc/conf.py
index b3da8fa9ec449702e4d24644a2cc303da8c60238..29fb63cbcc8614aa038ccad7c602f2a539b2b0e6 100644 (file)
--- a/Doc/conf.py
+++ b/Doc/conf.py
@@ -268,7 +268,7 @@ ogp_site_url = 'https://docs.python.org/3/'
 ogp_site_name = 'Python documentation'
 ogp_image = '_static/og-image.png'
 ogp_custom_meta_tags = [
-    '<meta property="og:image:width" content="200">',
-    '<meta property="og:image:height" content="200">',
-    '<meta name="theme-color" content="#3776ab">',
+    '<meta property="og:image:width" content="200" />',
+    '<meta property="og:image:height" content="200" />',
+    '<meta name="theme-color" content="#3776ab" />',
 ]