mnt: pin mistune version for readthedocs (#102)

xuyxu · web-flow · commit d05af70ccfec · 2021-12-06T23:18:42.000+08:00
* Update requirements.txt

* Update requirements.txt
diff --git a/docs/requirements.txt b/docs/requirements.txt
@@ -2,4 +2,5 @@ sphinx==3.2.*
 sphinx-panels==0.5.*
 sphinxemoji==0.1.8
 sphinx-copybutton
-m2r2==0.2.7
+m2r2==0.2.7
+mistune==0.8.4
