SDL: CI: fixed branch name

SDL Commits
1 
From 557aa140e8f1a95e5da9f67e0b28e637b8135928 Mon Sep 17 00:00:00 2001
From: Martin Gerhardy <[EMAIL REDACTED]>
Date: Sun, 21 Feb 2021 14:18:09 +0100
Subject: [PATCH] CI: fixed branch name

---
 .github/workflows/gh-pages.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index f73778061..a543ad783 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -2,7 +2,7 @@ name: GitHub Pages
 on:
   push:
     branches:
-      - master
+      - main
 
 jobs:
   build: