Merge pull request #2106 from verilog-to-routing/fix-the-docs

[doc] Fixing the documentation build issue

Author: MohamedElgammal

.readthedocs.yaml

@@ -15,6 +15,6 @@ formats: all
 
 # Optionally set the version of Python and requirements required to build your docs
 python:
-  version: 3.7
+  version: 3.8
   install:
     - requirements: doc/requirements.txt