fix: display api name when running api as testcase

tests/httpbin/api/get_headers.yml

@@ -1,9 +1,11 @@
 
-name: headers
+name: get headers
 base_url: http://httpbin.org
+variables:
+    expected_status_code: 200
 request:
     url: /headers
     method: GET
 validate:
-    - eq: ["status_code", 200]
+    - eq: ["status_code", $expected_status_code]
     - eq: [content.headers.Host, "httpbin.org"]