explained error and removed let

Author: mshayriyesaricicek

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

@@ -1,5 +1,5 @@
 // Predict and explain first...
-//  =============> write your prediction here
+// I think this function capitalise is meant to make the first letter of a string into uppercase then return the string
 
 // call the function capitalise with a string input
 // interpret the error message and figure out why an error is occurring
@@ -9,5 +9,11 @@ function capitalise(str) {
   return str;
 }
 
-// =============> write your explanation here
-// =============> write your new code here
+// I got the error "SyntaxError: Identifier 'str' has already been declared" 
+// to fix this, I just removed the word let in line 8. This gave a value to str without trying to declare it again
+// I ran the new code and there were no errors
+
+//  function capitalise(str) {
+//    str = `${str[0].toUpperCase()}${str.slice(1)}`;
+//    return str;
+//  }