No master, but main, once more

_includes/footer.html

@@ -5,7 +5,7 @@
     </p>
     <p class="margin-top">
       To suggest changes to these documents, or if you found any errors in them, please <a href="/contact.html">please let us know</a>.
-      You can also <a href="https://0xacab.org/schleuder/schleuder-website/commits/master">see their history</a>.
+      You can also <a href="https://0xacab.org/schleuder/schleuder-website/commits/main">see their history</a>.
     </p>
   </div>
 </footer>
\ No newline at end of file

schleuder/docs/older/3.0/index.md

@@ -355,4 +355,4 @@ To suggest changes to these documents or if you found any errors in them, please
 
 ## Changes to the documentation
 
-We use a public git-repository to maintain these documents, thus you can [browse the list of changes](https://0xacab.org/schleuder/schleuder-website/commits/master).
+We use a public git-repository to maintain these documents, thus you can [browse the list of changes](https://0xacab.org/schleuder/schleuder-website/commits/main).

schleuder/docs/older/3.1/index.md

@@ -399,4 +399,4 @@ To suggest changes to these documents or if you found any errors in them, please
 
 ## Changes to the documentation
 
-We use a public git-repository to maintain these documents, thus you can [browse the list of changes](https://0xacab.org/schleuder/schleuder-website/commits/master).
+We use a public git-repository to maintain these documents, thus you can [browse the list of changes](https://0xacab.org/schleuder/schleuder-website/commits/main).