Use correct header level (#1078)

This commit is contained in:
Thomas Schaub
2017-11-13 21:59:51 +01:00
committed by Sergey Zubkov
parent 7be6e7daed
commit 90076b9795

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@@ -19060,7 +19060,7 @@ Synchronizing `iostreams` with `printf-style` I/O can be costly.
### <a name="Rio-endl"></a>SL.io.50: Avoid `endl`
### Reason
##### Reason
The `endl` manipulator is mostly equivalent to `'\n'` and `"\n"`;
as most commonly used it simply slows down output by doing redundant `flush()`s.