chore: update TC banner details (#11102)

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## PR-Codex overview
This PR focuses on improving the formatting of reward display strings in
the `AdTradingCompetition` and `TradingCompetition` components, ensuring
consistent spacing and clarity in the presentation of monetary values.

### Detailed summary
- In `AdTradingCompetition.tsx`, added a space before the currency unit
when rendering the reward.
- In `TradingCompetition.tsx`, modified the reward display to include a
space between the reward amount and the currency unit.

> ✨ Ask PR-Codex anything about this PR by commenting with `/codex {your
question}`

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apps/web/src/components/AdPanel/Ads/AdTradingCompetition.tsx

@@ -17,7 +17,7 @@ export const AdTradingCompetition = (props: AdPlayerProps & { token: 'aitech' |
     <AdCard imageUrl={getImageUrl(tradingCompetitionConfig[token].imgUrl)} {...rest}>
       <BodyText mb="0">
         {t('Swap %token% to win a share of', { token: token.toUpperCase() })}{' '}
-        {unit === '$' ? `$${reward}` : `${reward}${unit}`}{' '}
+        {unit === '$' ? `$${reward}` : `${reward} ${unit}`}.{' '}
         <Link fontSize="inherit" href={tradingCompetitionConfig[token].swapUrl} color="secondary" bold>
           {t('Swap Now')}
         </Link>

apps/web/src/components/PhishingWarningBanner/TradingCompetition.tsx

@@ -10,7 +10,7 @@ export const tradingCompetitionConfig = {
     learnMoreUrl:
       'https://blog.pancakeswap.finance/articles/pancake-swap-x-solidus-ai-tech-trading-competition-50-000-in-rewards?utm_source=Website&utm_medium=infostripe&utm_campaign=AITECH&utm_id=TradingCompetition',
     reward: '50,000',
-    unit: 'AITECH',
+    unit: '$',
   },
   bfg: {
     imgUrl: 'bfg_competition',
@@ -51,7 +51,7 @@ export const TradingCompetition: React.FC<{ token: 'aitech' | 'bfg' | 'apt' | 'v
         {t('Swap %token% to win a share of', { token: token.toUpperCase() })}{' '}
       </Text>
       <Text bold as="span" color="#FCC631" fontSize={['12px', '12px', '14px']}>
-        {unit === '$' ? `$${reward}` : `${reward}${unit}`}
+        {unit === '$' ? `$${reward}` : `${reward} ${unit}`},
       </Text>
       <Text bold as="span" color="#FFFFFF" fontSize={['12px', '12px', '14px']}>
         {t('with daily prizes and leaderboard rewards!')}