git: Fix branch switch alias

Fixed alias `gcb` to switch to a branch if it exists and if not create it.

git/.config/sh/alias.d/git.sh

@@ -23,7 +23,9 @@ alias gcn!='git commit -v --no-edit --amend'
 if version_at_least 2.23 "$git_version"; then
     alias gcm='git switch master 2>/dev/null || git switch main'
     alias gcd='git switch develop 2>/dev/null || git switch staging'
-    alias gcb='git switch -c'
+    gcb() {
+        git switch "$@" 2>/dev/null || git switch -c "$@"
+    }
 else
     alias gcm='git checkout master 2>/dev/null || git checkout main'
     alias gcd='git checkout develop'