Update tree.rst - previous update was misleading

[hagen00]

Previous pull request was misleading. Keeping the docs to make passing conditions obvious, but refactoring to encourage better code. #5102 (comment)

references: #5102 (comment) and cakephp/cakephp#10919

[saeideng]

you can use one of these

       ->find()
       ->where(['name LIKE' => '%Foo%'])
       ->find('children', ['for' => 1]);

OR

       ->find()
       ->find('children', ['for' => 1])
       ->where(['name LIKE' => '%Foo%'])

OR

       ->find('children', ['for' => 1])
       ->where(['name LIKE' => '%Foo%'])

[hagen00]

@saeideng do you think necessary to specify all those three ways of doing it? The last one seems best to me. The first two shouldn't really be necessary. (the first two are both the same. If anything, we can pick one of those + the last one)

[saeideng]

do you think necessary to specify all those three ways of doing it?

no
for this last code is better