fix docs build (#1421)

cyjseagull · web-flow · commit bb1201346476 · 2022-04-01T23:32:39.000+08:00
diff --git a/requirements.txt b/requirements.txt
@@ -10,3 +10,4 @@ sphinx-notfound-page == 0.1
 commonmarkextensions == 0.0.5
 commonmark == 0.8.1
 git-lfs
+Jinja2<3.1
