fix a filename

buildjob

@@ -45,7 +45,7 @@ if [[ -n "$TIMING_CONF" ]]; then
          -H "X-Branch: $CI_COMMIT_REF_NAME" \
          -H "X-Config: $TIMING_CONF" \
          -H "X-Date: $(git show $CI_COMMIT_SHA -s --pretty=%cI)" \
-         --data-binary @- < build-times.txt
+         --data-binary @- < build-time.txt
 fi
 
 # maybe create opam package