Removed redeclaration in capitalise() function

Author: Zadri415

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

@@ -1,5 +1,6 @@
 // Predict and explain first...
 //  =============> write your prediction here
+// It will show an error message
 
 // call the function capitalise with a string input
 // interpret the error message and figure out why an error is occurring
@@ -8,6 +9,13 @@ function capitalise(str) {
   let str = `${str[0].toUpperCase()}${str.slice(1)}`;
   return str;
 }
+capitalise("Hello");
 
 // =============> write your explanation here
+// SyntaxError: Identifier 'str' has already been declared - This error means that the variable 'str' was declared more than once in the same scope.
+// JavaScrip doesn't allow that - once a variable name is declared with let or const, you can't declare it again.
 // =============> write your new code here
+function capitalise(str) {
+  return str[0].toUpperCase() + str.slice(1);
+}
+