Fix .json file name (#6)

diff --git a/.travis.yml b/.travis.yml
index 1aadc37..6bcfe70 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,4 +8,4 @@
   only:
     - master
 
-script: docker run -it -e "APPLICATION_ID=${APPLICATION_ID}" -e "API_KEY=${API_KEY}" -e "CONFIG=$(cat .pegasus-kv.json | jq -r tostring)" algolia/docsearch-scraper
+script: docker run -it -e "APPLICATION_ID=${APPLICATION_ID}" -e "API_KEY=${API_KEY}" -e "CONFIG=$(cat .apache_pegasus.json | jq -r tostring)" algolia/docsearch-scraper