[docs] [issue16438] Numeric operator predecence confusing

[Mariatta Wijaya]

Mariatta Wijaya <mariatta at python.org> added the comment:

I'm actually thinking perhaps the "see :ref:`operator-summary`" clause should be separate and under Notes below the table, as opposed to current PR:

```
All numeric types (except complex) support the following operations (for priorities of
the operations, see :ref:`operator-summary`)
```

reads oddly to me.

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nosy: +Mariatta

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<https://bugs.python.org/issue16438>
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