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kotlinlang

Hi.. I found a simple typo..
<https://arturbosch.github.io/detekt/style.html#noncompliant-code-39>
```a?.let { 1.plus(1) } // can be replaced with `if (a == null) 1.plus(1)````
to
```a?:let { 1.plus(1) } // can be replaced with `if (a == null) 1.plus(1)`
a?.let { 1.plus(1) } // can be replaced with `if (a != null) 1.plus(1)````


<https://github.com/detekt/detekt/pull/2969> Thanks for report it!

Next time it’s better if you can open an issue (or just create the PR)

Thank you. I wasn't confident in open the PR, but it seemed too simple to post as an issue. I'll try next time :smile: