diff --git a/README.md b/README.md
index e26ad00..8476829 100644
--- a/README.md
+++ b/README.md
@@ -6,14 +6,15 @@ more informations on https://envs.net/chat/matrix/
 
 ## useful documentations
 
-\- [synapse INSTALL.md](https://github.com/matrix-org/synapse/blob/master/docs/setup/installation.md)<br />
+\- [matrix-spec](https://matrix.org/docs/spec/)  
+\- [synapse INSTALL.md](https://github.com/matrix-org/synapse/blob/master/docs/setup/installation.md)  
 \- [synapse default homeserver.yaml](https://github.com/matrix-org/synapse/blob/master/docs/sample_config.yaml)
 
-\- [synapse-delagate](https://github.com/matrix-org/synapse/blob/master/docs/delegate.md)<br />
-\- [synapse-workers](https://github.com/matrix-org/synapse/blob/master/docs/workers.md)<br />
+\- [synapse-delagate](https://github.com/matrix-org/synapse/blob/master/docs/delegate.md)  
+\- [synapse-workers](https://github.com/matrix-org/synapse/blob/master/docs/workers.md)  
 \- [synapse-metrics](https://github.com/matrix-org/synapse/blob/master/docs/metrics-howto.md)
 
 \- [synapse admin API](https://github.com/matrix-org/synapse/tree/master/docs/admin_api)
 
-\- [matrix-synchrotron-balancer](https://github.com/Sorunome/matrix-synchrotron-balancer)<br />
+\- [matrix-synchrotron-balancer](https://github.com/Sorunome/matrix-synchrotron-balancer)  
 \- [matrix-media-repo](https://github.com/turt2live/matrix-media-repo)
diff --git a/etc/matrix-media-repo/README.md b/etc/matrix-media-repo/README.md
new file mode 100644
index 0000000..10e3200
--- /dev/null
+++ b/etc/matrix-media-repo/README.md
@@ -0,0 +1,2 @@
+source: [https://github.com/turt2live/matrix-media-repo](https://github.com/turt2live/matrix-media-repo)
+
diff --git a/etc/matrix-synchrotron-balancer/README.md b/etc/matrix-synchrotron-balancer/README.md
new file mode 100644
index 0000000..a66924d
--- /dev/null
+++ b/etc/matrix-synchrotron-balancer/README.md
@@ -0,0 +1 @@
+source: [https://github.com/Sorunome/matrix-synchrotron-balancer](https://github.com/Sorunome/matrix-synchrotron-balancer)