docs(hrefs): update readthedocs hrefs (#3476)

src/platform/linux/kmsgrab.cpp

@@ -1685,7 +1685,7 @@ namespace platf {
           BOOST_LOG((window_system != window_system_e::X11 || config::video.capture == "kms") ? fatal : error)
             << "You must run [sudo setcap cap_sys_admin+p $(readlink -f $(which sunshine))] for KMS display capture to work!\n"sv
             << "If you installed from AppImage or Flatpak, please refer to the official documentation:\n"sv
-            << "https://docs.lizardbyte.dev/projects/sunshine/en/latest/about/setup.html#install"sv;
+            << "https://docs.lizardbyte.dev/projects/sunshine/latest/md_docs_2getting__started.html#linux"sv;
           break;
         }