Update flutter doctor text (flutter#6682)

Dan Rubel · web-flow · commit d86900d22f56 · 2016-11-03T13:17:35.000-04:00
diff --git a/packages/flutter_tools/lib/src/android/android_sdk.dart b/packages/flutter_tools/lib/src/android/android_sdk.dart
@@ -118,7 +118,7 @@ class AndroidSdk {
       return <String>['Android SDK file not found: $adbPath.'];
 
     if (sdkVersions.isEmpty || latestVersion == null)
-      return <String>['Android SDK does not have the proper build-tools.'];
+      return <String>['Android SDK is missing command line tools; download from https://goo.gl/XxQghQ'];
 
     return latestVersion.validateSdkWellFormed();
   }

Original file line number	Diff line number	Diff line change
`@@ -118,7 +118,7 @@ class AndroidSdk {`
`118`	`118`	`return <String>['Android SDK file not found: $adbPath.'];`
`119`	`119`
`120`	`120`	`if (sdkVersions.isEmpty \|\| latestVersion == null)`
`121`		`- return <String>['Android SDK does not have the proper build-tools.'];`
	`121`	`+ return <String>['Android SDK is missing command line tools; download from https://goo.gl/XxQghQ'];`
`122`	`122`
`123`	`123`	`return latestVersion.validateSdkWellFormed();`
`124`	`124`	`}`