try a different specification for the static-website script

Author: Mark-Simulacrum

.travis.yml

@@ -7,7 +7,7 @@ cache:
 env:
   RUSTINFRA_DEPLOY_DIR: book
 import:
-  - lang/simpleinfra/travis-configs/static-websites.yml
+  - rust-lang/simpleinfra/travis-configs/static-websites.yml
 
 rust:
   - stable