find missing readthedocs bulletpoints (#2688)

* remove sphinx-better-theme

* point to docs requirements in .readthedocs.yml

* bump sphinx_rtd_theme version

Author: Paul Robinson

.readthedocs.yml

@@ -1,2 +1,9 @@
+version: 2
+
 build:
   image: latest
+
+python:
+  version: 3.8
+  install:
+  - requirements: requirements-docs.txt

newsfragments/2688.bugfix.rst

@@ -0,0 +1 @@
+bump `sphinx_rtd_theme` version to fix missing unordered list bullets

newsfragments/2688.internal.rst

@@ -0,0 +1 @@
+move definition of RTD install requirements file from their dashboard into `.readthedocs.yml`, and remove unused `sphinx-better-theme` from requirements

setup.py

@@ -20,15 +20,14 @@
     ],
     "docs": [
         "mock",
-        "sphinx-better-theme>=0.1.4",
         "click>=5.1",
         "configparser==3.5.0",
         "contextlib2>=0.5.4",
         "py-geth>=3.9.1,<4",
         "py-solc>=0.4.0",
         "pytest>=6.2.5,<7",
         "sphinx>=4.2.0,<5",
-        "sphinx_rtd_theme>=0.1.9",
+        "sphinx_rtd_theme>=0.5.2",
         "toposort>=1.4",
         "towncrier==18.5.0",
         "urllib3",