[FIX] document_page: line too long

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: gregory-rutecki

document_page/wizard/document_page_show_diff.py

@@ -27,4 +27,8 @@ def _get_diff(self):
             raise UserError(self.env._("Select one or maximum two history revisions!"))
         return diff
 
-    diff = fields.Html(readonly=True, default=lambda self: self._get_diff(), sanitize_tags=False)
+    diff = fields.Html(
+        readonly=True,
+        default=lambda self: self._get_diff(),
+        sanitize_tags=False,
+    )