message: Fix typo + minro reword of test description
diff: @@ -51,7 +51,7 @@ describe("Convert Let To Const", () => {
  },
  {
  description:
  - "multiple variables delcared seperately, other one mutated",
  + "multiple variables declared seperately, other one is mutated",
  code: `{
  let someVariable = 'someValue';
  let otherVariable = 'otherValue';
  