correct roman numeral VII description (GH-15523)

diff --git a/Doc/howto/unicode.rst b/Doc/howto/unicode.rst
index 24c3235..d5632bc 100644
--- a/Doc/howto/unicode.rst
+++ b/Doc/howto/unicode.rst
@@ -57,7 +57,7 @@
    ...
    007B    '{'; LEFT CURLY BRACKET
    ...
-   2167    'Ⅶ': ROMAN NUMERAL EIGHT
+   2167    'Ⅶ': ROMAN NUMERAL SEVEN
    2168    'Ⅸ': ROMAN NUMERAL NINE
    ...
    265E    '♞': BLACK CHESS KNIGHT