corrected conditionals (#29295)

previous version passed the tests, but were only relevant to the numbers  tested, not what the question was asking for.

guide/english/certifications/javascript-algorithms-and-data-structures/basic-javascript/use-multiple-conditional-ternary-operators/index.md

@@ -11,7 +11,7 @@ Here’s a solution:
 In the function body we need to add multiple ```conditional operators``` - as in our lesson:
 
 ```javascript
-{return (num === 10) ? "positive" : (num === -12) ? "negative" : "zero";}
+{return (num > 0) ? "positive" : (num < 0) ? "negative" : "zero";}
 ```
 In this way, function can check if a number is positive, negative or zero.
 
@@ -19,7 +19,7 @@ Here’s a full solution:
 
 ```javascript
 function checkSign(num) {
-  return (num === 10) ? "positive" : (num === -12) ? "negative" : "zero";
+  return (num > 0) ? "positive" : (num < -12) ? "negative" : "zero";
 }
 checkSign(10);
 ```