feat: display right reward wording for none hackathon challenge

Author: Odile078

src/components/cards/challenge/Challenge.tsx

@@ -57,7 +57,7 @@ export default function ChallengeCard({ data, community, isCourseEnd }: Challeng
                 <div className="md:pl-2 max-w-max">
                   <div className="flex text-sm text-gray-700">
                     <span className="block font-medium">
-                      {`${data?.isHackathon && "$"} ${totalReward} ${data?.isHackathon ? `Prize Pool Rewards` : `${reward?.token} Rewards`}`}
+                      {`${data?.isHackathon ? "$" : ""} ${totalReward} ${data?.isHackathon ? `Prize Pool Rewards` : `${reward?.token} Rewards`}`}
                     </span>
                   </div>
                   <div className="text-gray-400 text-xs font-normal">{data?.isHackathon ? "Top projects win money prizes" : "For submission and feedback"}</div>