better for description

bash.html.markdown

@@ -108,7 +108,8 @@ esac
 
 # For loops iterate for as many arguments given:
 # The contents of var $VARIABLE is printed three times.
-for VARIABLE in x y z
+# Note that ` ` is equivalent to $( ) and that seq returns a sequence of size 3.
+for VARIABLE in `seq 3`
 do
     echo "$VARIABLE"
 done