DOC: remove .html from page URLs (#388)

.readthedocs.yml

@@ -1,7 +1,7 @@
 version: 2
 
 sphinx:
-  builder: html
+  builder: dirhtml
   configuration: docs/conf.py
   fail_on_warning: true
 

tox.ini

@@ -38,7 +38,7 @@ commands =
   sphinx-build \
     --keep-going \
     -TW \
-    -b html \
+    -b dirhtml \
     docs/ docs/_build/html
 description =
   Build documentation and API through Sphinx
@@ -72,6 +72,7 @@ commands =
     --re-ignore docs/api/.* \
     --watch docs \
     --watch src \
+    -b dirhtml \
     docs/ docs/_build/html
 description =
   Set up a server to directly preview changes to the HTML pages
@@ -87,7 +88,7 @@ commands =
   sphinx-build \
     --keep-going \
     -TW \
-    -b html \
+    -b dirhtml \
     docs/ docs/_build/html
 description =
   Build documentation through Sphinx WITH output of Jupyter notebooks
@@ -122,6 +123,7 @@ commands =
     --re-ignore docs/api/.* \
     --watch docs \
     --watch src \
+    -b dirhtml \
     docs/ docs/_build/html
 description =
   Set up a server to directly preview changes to the HTML pages
@@ -135,7 +137,11 @@ setenv =
 allowlist_externals =
   sphinx-build
 commands =
-  sphinx-build -nW --keep-going -b html docs/ docs/_build/html
+  sphinx-build \
+  --keep-going \
+  -b dirhtml \
+  -nW \
+  docs/ docs/_build/html
 description =
   Execute ALL Jupyter notebooks and build documentation with Sphinx
 passenv = *