Add 404 page (#1933)

* Add 404 page

Only build htmlzip format for docs

* Add homepage link to 404 page

.gitignore

@@ -1,4 +1,11 @@
-_build
 .venv
 .vscode
-build
+build
+
+# documentation artifacts
+_build/
+_images/
+_static/
+_templates/
+_toc.yml
+docBin/

.readthedocs.yaml

@@ -6,7 +6,7 @@ version: 2
 sphinx:
    configuration: docs/conf.py
 
-formats: all
+formats: [htmlzip]
 
 python:
    version: "3.8"

docs/404.md

@@ -0,0 +1,5 @@
+# 404 Page Not Found
+
+Page could not be found.
+
+Return to [home](index) or please use the links from the sidebar to find what you are looking for.

docs/conf.py

@@ -4,10 +4,6 @@
 # list see the documentation:
 # https://www.sphinx-doc.org/en/master/usage/configuration.html
 
-import shutil
-shutil.copy2('../CHANGELOG.md','./')
-shutil.copy2('../RELEASE.md','./')
-
 from rocm_docs import ROCmDocs
 
 docs_core = ROCmDocs("ROCm Documentation")