02_repeatString/solution - Line-32, replace "odin" with "hey"

As asked by @JoshDevHub in a discussion of a related PR, I made a similar change to this solution. In the earlier code, the comment description mentioned "hey" as a sample string but the code had "odin" string. This update addresses that tiny gap between sample comments and related code.

More on: #505 (review)

Author: bhagyeshsp

02_repeatString/solution/repeatString-solution.spec.js

@@ -29,7 +29,7 @@ describe('repeatString', () => {
     /*The .match(/((hey))/g).length is a regex that will count the number of heys
     in the result, which if your function works correctly will equal the number that
     was randomly generated. */
-    expect(repeatString('odin', number).match(/((odin))/g).length).toEqual(
+    expect(repeatString('hey', number).match(/((hey))/g).length).toEqual(
       number
     );
   });