refactor: update route parameter name from version2 to version in PacerVersionIndex component

Author: KevinVandy

app/routes/_libraries/pacer.$version.index.tsx

@@ -26,7 +26,7 @@ const library = getLibrary('pacer')
 
 export default function PacerVersionIndex() {
   const { sponsorsPromise } = librariesRouteApi.useLoaderData()
-  const { version2 } = Route.useParams()
+  const { version } = Route.useParams()
 
   const gradientText = `inline-block text-transparent bg-clip-text bg-gradient-to-r ${pacerProject.colorFrom} ${pacerProject.colorTo}`