Editted key errors 0 to match more closely with what was asked

Author: divinmank

Sprint-2/1-key-errors/0.js

@@ -7,8 +7,8 @@ capitalise("hello world");
 // Error message: SyntaxError: Identifier 'str' has already been declared. The error is because the variable str has already been declared.
 
 function capitalise(str) {
-  let newStr = `${str[0].toUpperCase()}${str.slice(1)}`;
-  return newStr;
+  let str = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return str;
 }
 
 // =============> I've given the variable a new name, newStr, to avoid redclaring the variable.

Sprint-2/1-key-errors/1.js

@@ -1,7 +1,6 @@
 // Predict and explain first...
-
 // Why will an error occur when this program runs?
-// =============> write your prediction here
+// =============> The error will be a syntax error because the variable decimalNumber has already been declared as a parameter. The console log is trying to access decimalNumber which is not within its scope.
 
 // Try playing computer with the example to work out what is going on
 
@@ -14,7 +13,13 @@ function convertToPercentage(decimalNumber) {
 
 console.log(decimalNumber);
 
-// =============> write your explanation here
+// =============> I got a syntax error that the variable is already declared.
 
 // Finally, correct the code to fix the problem
 // =============> write your new code here
+// function convertToPercentage(decimalNumber) {
+//   const percentage = `${decimalNumber * 100}%`;
+//   return percentage;
+// }
+
+// console.log(convertToPercentage(0.5));