infra: pin version for ducutils

Rui Wang Napieralski · Rui Wang Napieralski · commit 59d0e2b7d56f · 2021-04-08T10:29:28.000-07:00
diff --git a/doc/requirements.txt b/doc/requirements.txt
@@ -1,2 +1,3 @@
 sphinx==3.1.1
 sphinx-rtd-theme==0.5.0
+docutils==0.15.2
