Update conf.py

conf.py

@@ -28,6 +28,16 @@ exclude_patterns = ["_build", "Thumbs.db", ".DS_Store"]
 html_theme = "sphinx_rtd_theme"
 html_static_path = ["_static"]
 
-myst_substitutions = {
-    'deb_url_v1_5': 'https://download.libreqos.com/libreqos_1.5-RC2.202510052233-1_amd64.deb'
+def ultimateReplace(app, docname, source):
+    result = source[0]
+    for key in app.config.ultimate_replacements:
+        result = result.replace(key, app.config.ultimate_replacements[key])
+    source[0] = result
+
+ultimate_replacements = {
+    "{deb_url_v1_5}" : "https://download.libreqos.com/libreqos_1.5-RC2.202510052233-1_amd64.deb"
 }
+
+def setup(app):
+   app.add_config_value('ultimate_replacements', {}, True)
+   app.connect('source-read', ultimateReplace)