fix(@angular/cli): change strategy for opening the browser when we call ng doc with Windows.

Author: wKoza

packages/angular/cli/commands/doc-impl.ts

@@ -19,8 +19,14 @@ export class DocCommand extends Command<DocCommandSchema> {
       searchUrl = `https://www.google.com/search?q=site%3Aangular.io+${options.keyword}`;
     }
 
-    return opn(searchUrl, {
-      wait: false,
-    });
+    let opt;
+    if (process.platform === 'win32') {
+      // window doesn't support to be called without `wait: true`
+      opt = { app: 'chrome', wait: true };
+    } else {
+      opt = { wait: false };
+    }
+
+    return opn(searchUrl, opt);
   }
 }