[docs] [issue24281] String formatting: incorrect number of decimal places

[Christopher Welborn]

Christopher Welborn added the comment:

You forgot the 'f' to specify that you want float formatting:

```
>>> '{:08.3f}'.format(12.34)

 '0012.340'
```

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nosy: +cjwelborn

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue24281>
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