Update document about jinja2 custom filters link (#1480)

diff --git a/docs/templates.md b/docs/templates.md
index 181cd1fefb03e7acad2ea9a44a664b4f3a4beb25..c449a14e5571211640d56614f3de4a4b43263798 100644 (file)
--- a/docs/templates.md
+++ b/docs/templates.md
@@ -88,4 +88,4 @@ Instead we'd recommend that you ensure that your endpoints perform all I/O,
 for example, strictly evaluate any database queries within the view and
 include the final results in the context.
 
-[jinja2]: https://jinja.palletsprojects.com/en/2.10.x/api/?highlight=environment#writing-filters
+[jinja2]: https://jinja.palletsprojects.com/en/3.0.x/api/?highlight=environment#writing-filters