[fractal/about-fractal-next] Update README.md

[Julian Sparber <jsparber src gnome org>]

commit 9fe385d64fef508238f936c51f039abae1df9b3f
Author: Julian Sparber <julian sparber net>
Date:   Fri Feb 5 16:41:07 2021 +0000

    Update README.md

 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/README.md b/README.md
index d5004ecc..02291fea 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ We are working on rewriting Fractal from scratch using [GTK4](https://www.gtk.or
 
 We already talked several times in the past about rewriting the application, but for different reasons we 
didn't do it. Now that the [matrix-rust-sdk](https://github.com/matrix-org/matrix-rust-sdk) exists, which 
does a lot of the heavy lifting for us, we have a good starting point to build Fractal without the need to 
implement every single feature from the Matrix API. Finally with the release of GTK4 we would need to rework 
most of Fractal's code anyways. Therefore, it just makes sense to start over and build Fractal with all 
features (e.g end-to-end encryption) we have in mind.
 
-Issues that target fractal-next should be labeled accordingly as "fractal-next".
+The main development branch is [fractal-next](https://gitlab.gnome.org/GNOME/fractal/-/tree/fractal-next). 
Issues that target fractal-next should be labeled accordingly as "fractal-next".
 
 ### Milestones
 The [main milestone](https://gitlab.gnome.org/GNOME/fractal/-/milestones/18) we try to achieve is to support 
all features the current Fractal has so that we can switch from Fractal to Fractal-next as the main codebase. 
In more details we need to implement the following features: