Update .readthedocs.yaml (#350)

Disable to solve Read the Docs build failure

Signed-off-by: Joe Moorhouse <[email protected]>

.readthedocs.yaml

@@ -16,9 +16,9 @@ sphinx:
    configuration: docs/conf.py
 
 # Optionally build your docs in additional formats such as PDF and ePub
-formats:
-   - pdf
-   - epub
+#formats:
+#   - pdf
+#   - epub
 
 # Optional but recommended, declare the Python requirements required
 # to build your documentation