Fixed rewriting of NavigationDots

prosjekt2/src/components/NavigationDots.jsx

 import React from 'react';
 
-function NavigationDots(){
+function NavigationDots(props){
   return (
     <div className="navDots">
-        <button className = "dot" onClick={this.props.goToFirstSlide}></button> 
-        <button className = "dot" onClick={this.props.goToSecondSlide}></button> 
-        <button className = "dot" onClick={this.props.goToThirdSlide}></button>
-        <button className = "dot" onClick={this.props.goToFourthSlide}></button> 
+        <button className = "dot" onClick={props.goToFirstSlide}></button> 
+        <button className = "dot" onClick={props.goToSecondSlide}></button> 
+        <button className = "dot" onClick={props.goToThirdSlide}></button>
+        <button className = "dot" onClick={props.goToFourthSlide}></button> 
     </div>
   );
 }