update the documentation structure following the final deliverable

Author: RenhaoL

.readthedocs.yaml

@@ -17,7 +17,7 @@ build:
 
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
-   configuration: docs/conf.py
+   configuration: docs/documentation/conf.py
 
 # If using Sphinx, optionally build your docs in additional formats such as PDF
 # formats:
@@ -26,4 +26,4 @@ sphinx:
 # Optionally declare the Python requirements required to build your docs
 python:
    install:
-   - requirements: requirements.txt
+   - requirements: requirements.txt