Added more examples for gcd

Author: JanluOfficial

public/consolidated/javascript.json

@@ -376,7 +376,7 @@
                     "division"
                 ],
                 "contributors": [],
-                "code": "function gcd(a, b) {\n    while (b !== 0) {\n        let temp = b;\n        b = a % b;\n        a = temp;\n    }\n    return a;\n}\n\n// Usage\ngcd(1920, 1080); // Returns: 120\n"
+                "code": "function gcd(a, b) {\n    while (b !== 0) {\n        let temp = b;\n        b = a % b;\n        a = temp;\n    }\n    return a;\n}\n\n// Usage\ngcd(1920, 1080); // Returns:    120\ngcd(1920, 1200); // Returns:    240\ngcd(5,12);       // Returns:      1\n"
             }
         ]
     },

snippets/javascript/mathematical-functions/greatest-common-divisor.md

@@ -16,5 +16,7 @@ function gcd(a, b) {
 }
 
 // Usage
-gcd(1920, 1080); // Returns: 120
+gcd(1920, 1080); // Returns:    120
+gcd(1920, 1200); // Returns:    240
+gcd(5,12);       // Returns:      1
 ```