;doc: journal: account display order: clarify

hledger/hledger.m4.md

@@ -1826,7 +1826,7 @@ If there are undeclared accounts, those will be displayed last, in alphabetical
 Sorting is done within each group of sibling accounts, at each level of the account tree.
 Eg, a declaration like `account parent:child` influences `child`'s position among its siblings.
 
-Note, it does not affect `parent`'s position; for that, you would need to also declare `account parent`.
+Note, it does not affect `parent`'s position; for that, you need an `account parent` declaration.
 
 Sibling accounts are always displayed together; hledger won't display `x:y` in between `a:b` and `a:c`.