Update coding-style.md (#782)
Update coding-style.md (#782)

* Update coding-style.md

I have added rule #18 which is Aprogenia's "Blank Line After Curly Brace" rule.

Note: I did not have to modify the sample code as it already observed that rule.

* Update coding-style.md

deleted typo on line 35.

* Update coding-style.md

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