Update pubspec.yaml (#249)

diff --git a/pubspec.yaml b/pubspec.yaml
index f5c3000..35820bb 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -6,7 +6,7 @@
   Supports WebDriver JSON interface and W3C spec.
   Requires the use of WebDriver remote server.
 
-homepage: https://github.com/google/webdriver.dart
+repository: https://github.com/google/webdriver.dart
 
 environment:
   sdk: '>=2.14.0 <3.0.0'