container: finance: fetch: prices: fix User-Agent

Removes whitespace and version tag format for "product-version".

container/src/finance/lib/internal/fetch/prices/internal/base.php

@@ -153,8 +153,9 @@ namespace dfi\prices\internal
          */
         protected function request_impl(string $url, array $header): mixed
         {
+            $version = preg_replace('/^v/', '', $this->get_env()->get_env('API_VERSION'));
             $headers = array(
-              'User-Agent: docker-finance /' . $this->get_env()->get_env('API_VERSION'),
+              'User-Agent: docker-finance/' . $version,
               'Accept: application/json',
               'Content-Type: application/json',
             );