Spelling corrections in Return/Break Early section

README.md

@@ -53,7 +53,7 @@ guard n.isNumber else {
 // Use n here
 ```
 
-You can also do it with `if` statement, but using `guard` is prefered, because `guard` statement without `return`, `break` or `continue` produces a compile-time error, so exit is guaranteed.
+You can also do it with `if` statement, but using `guard` is preferred, because `guard` statement without `return`, `break` or `continue` produces a compile-time error, so exit is guaranteed.
 
 #### Avoid Using Force-Unwrapping of Optionals
 
@@ -307,4 +307,4 @@ _Rationale:_ Operators consist of punctuation characters, which can make them di
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 * [한국어판](https://github.com/minsOne/swift-style-guide/blob/master/README_KR.md)
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-* [Versão em Português do Brasil](https://github.com/fernandocastor/swift-style-guide/blob/master/README-PTBR.md)
+* [Versão em Português do Brasil](https://github.com/fernandocastor/swift-style-guide/blob/master/README-PTBR.md)