Fix more JOIN doc inaccuracies.

src/Database/Esqueleto/Internal/Language.hs

@@ -659,21 +659,17 @@ data Insertion a
 --   :: (...) => InnerJoin (expr (Entity Person)) (expr (Maybe (Entity BlogPost)))
 -- (p1 `'InnerJoin`` f `'InnerJoin`` p2)
 --   :: (...) => InnerJoin
---                 (expr (Entity Person))
---                 (InnerJoin (expr (Entity Follow))
---                            (expr (Entity Person)))
--- ((p1 `'InnerJoin`` f) `'InnerJoin`` p2) ::
---   :: (...) => InnerJoin
 --                 (InnerJoin (expr (Entity Person))
 --                            (expr (Entity Follow)))
 --                 (expr (Entity Person))
+-- (p1 `'InnerJoin`` (f `'InnerJoin`` p2)) ::
+--   :: (...) => InnerJoin
+--                 (expr (Entity Person))
+--                 (InnerJoin (expr (Entity Follow))
+--                            (expr (Entity Person)))
 -- @
 --
 -- Note that some backends may not support all kinds of @JOIN@s.
--- For example, when using the SQL backend with SQLite, it will
--- not accept the last example above (which is associated to the
--- left, instead of being to the right) and will not accept
--- 'RightOuterJoin's or 'FullOuterJoin's.
 from :: From query expr backend a => (a -> query b) -> query b
 from = (from_ >>=)