[telemetry] Ensure page sets reference the right WPR archives.

tools/perf/page_sets/data/intl_ko_th_vi.json

 {
-    "page_set": "../intl_ko_th_vi.json", 
     "description": "Describes the Web Page Replay archives for a page set. Don't edit by hand! Use record_wpr for updating.", 
     "archives": {
         "intl_ko_th_vi_000.wpr": [
             "http://us.24h.com.vn/", 
             "http://vnexpress.net/", 
             "http://vietnamnet.vn/", 
             "http://news.zing.vn/the-gioi/ba-dam-thep-margaret-thatcher-qua-doi/a312895.html#home_noibat1", 
             "http://kenh14.vn/home.chn", 
             "http://www.naver.com/", 
             "http://www.daum.net/", 
             "http://www.donga.com/", 
             "http://www.chosun.com/", 
             "http://www.danawa.com/", 
             "http://www.sanook.com/", 
             "http://pantip.com/", 
             "http://thaimisc.com/"
         ]
     }
 }