feat(docs): control whether to link modules definition to git repository

docs/docgen.nix

@@ -9,6 +9,7 @@
 
     "^docs/.*"
   ],
+  linkToRepo ? false,
 }:
 
 stdenvNoCC.mkDerivation {
@@ -90,7 +91,11 @@ stdenvNoCC.mkDerivation {
                       in
                       {
                         name = relPath file;
-                        url = "https://git.shellgod.icu/Sk7Str1p3/nixos/src/branch/main/${relPath file}";
+                        url =
+                          if linkToRepo then
+                            "https://git.shellgod.icu/Sk7Str1p3/nixos/src/branch/main/${relPath file}"
+                          else
+                            "file://${decl}";
                       }
                     ) opt.declarations;
                   };