Fix available memory script.

It was writing a file to my home directory.

ansible/roles/sway/files/waybar_available_memory_freebsd

@@ -15,7 +15,7 @@ while true; do
     free_percent=$((100 * free_pages / total_pages))
     text=""
 
-    if [ $free_bytes > $((1024 * 1024 * 1024)) ]; then
+    if [ $free_bytes -ge $((1024 * 1024 * 1024)) ]; then
         text="$((free_bytes / 1024 / 1024 / 1024)) GiB"
     fi