rtd: enable htmlzip build (ManimCommunity#3355)

naveen521kk · web-flow · commit 571f79be2cf0 · 2023-10-09T20:41:37.000+02:00
also, bump python to 3.11 fixes ManimCommunity#3342
diff --git a/.readthedocs.yml b/.readthedocs.yml
@@ -1,9 +1,13 @@
 version: 2
+
+formats:
+  - htmlzip
+
 build:
   os: ubuntu-22.04
 
   tools:
-    python: "3.10"
+    python: "3.11"
 
   apt_packages:
     - libpango1.0-dev
