More renaming

docs/welcome_and_overview.md

@@ -1,6 +1,6 @@
 # Introduction
 
-Welcome to the documentation repository for Synapse, a 
+Welcome to the documentation repository for Synapse, a
 [Matrix](https://matrix.org) homeserver implementation developed by Element.
 
 ## Installing and using Synapse
@@ -36,17 +36,17 @@ following documentation:
 * Read the [Contributing Guide](development/contributing_guide.md). It is meant
   to walk new contributors through the process of developing and submitting a
   change to the Synapse codebase (which is [hosted on
-  GitHub](https://github.com/matrix-org/synapse)).
+  GitHub](https://github.com/element.-hq/synapse)).
 
 * Set up your [development
   environment](development/contributing_guide.md#2-what-do-i-need), then learn
   how to [lint](development/contributing_guide.md#run-the-linters) and
   [test](development/contributing_guide.md#8-test-test-test) your code.
 
-* Look at [the issue tracker](https://github.com/matrix-org/synapse/issues) for
+* Look at [the issue tracker](https://github.com/element.-hq/synapse/issues) for
   bugs to fix or features to add. If you're new, it may be best to start with
   those labeled [good first
-  issue](https://github.com/matrix-org/synapse/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22).
+  issue](https://github.com/element.-hq/synapse/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22).
 
 * Understand [how Synapse is
   built](development/internal_documentation/index.html), how to [migrate
@@ -58,7 +58,7 @@ following documentation:
   do so!
 
 * And finally, contribute to this documentation! The source for which is
-  [located here](https://github.com/matrix-org/synapse/tree/develop/docs).
+  [located here](https://github.com/element.-hq/synapse/tree/develop/docs).
 
 ## Reporting a security vulnerability