fix browser checkmark (#31888)

static/app/views/performance/vitalDetail/vitalDetailContent.tsx

@@ -380,7 +380,7 @@ class VitalDetailContent extends Component<Props, State> {
               {Object.values(Browser).map(browser => (
                 <BrowserItem key={browser}>
                   {vitalSupportedBrowsers[vitalName]?.includes(browser) ? (
-                    <IconCheckmark color="green200" size="sm" />
+                    <IconCheckmark color="green300" size="sm" />
                   ) : (
                     <IconClose color="red300" size="sm" />
                   )}