[calls] readme: Update links to d/control

[Evangelos Ribeiro Tzaras <devrtz src gnome org>]

commit 1cbc948e12d012ad8e2f69910263ff72ed8a3c0a
Author: Evangelos Ribeiro Tzaras <devrtz fortysixandtwo eu>
Date:   Sat Sep 3 16:49:44 2022 +0200

    readme: Update links to d/control

 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/README.md b/README.md
index 905708d2..2cb3b911 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ A phone dialer and call handler.
 Calls is licensed under the GPLv3+.
 
 ## Dependencies
-To build Calls you need to first install the build-deps defined by [the debian/control 
file](https://gitlab.gnome.org/GNOME/calls/blob/master/debian/control#L8)
+To build Calls you need to first install the build-deps defined by [the debian/control 
file](https://gitlab.gnome.org/GNOME/calls/blob/main/debian/control#L8)
 
 If you are running a Debian based distribution, you can easily install all those the dependencies making use 
of the following command