[docs] Use FetchContent to grab CMake modules (#61)

docs/source/conf.py

@@ -26,10 +26,6 @@ and a single combined documentation llms-full.txt file, written in reStructuredT
 # rst_file_suffix = ".html.rst"
 markdown_file_suffix = ".html.md"
 
-extlinks = {
-    "ghfile": ("https://github.com/jdillard/sphinx-llms-txt/blob/main/%s", "%s")
-}
-
 # check if the current commit is tagged as a release (vX.Y.Z)
 try:
     GIT_TAG_OUTPUT = subprocess.check_output(["git", "tag", "--points-at", "HEAD"])
@@ -61,6 +57,7 @@ extensions = [
     "sphinxcontrib.restbuilder",
     "sphinx_inline_tabs",
     "sphinx.ext.extlinks",
+    "sphinx_design",
 ]
 
 # The language for content autogenerated by Sphinx. Refer to documentation