Remove ambiguous 'web' from landing blurb. (#3230)

* Remove ambiguous 'web' from landing blurb.

* Remove extra 'and'

Author: isoos

app/lib/frontend/templates/_consts.dart

@@ -42,8 +42,8 @@ SdkDict getSdkDict(String sdk) {
 }
 
 final defaultLandingBlurbHtml =
-    '<p class="text">Find and use packages to build <a href="/flutter">Flutter</a> and '
-    '<a href="/web">web</a> apps with <a target="_blank" rel="noopener" href="${urls.dartSiteRoot}">Dart</a>.</p>';
+    '<p class="text">Find and use packages to build <a href="/dart">Dart</a> and '
+    '<a href="/flutter">Flutter</a> apps.</p>';
 
 final flutterLandingBlurbHtml =
     '<p class="text"><a target="_blank" rel="noopener" href="https://flutter.dev/">Flutter<sup><small>↗</small></sup></a> '

app/test/frontend/golden/landing_page.html

@@ -87,9 +87,8 @@ <h2 class="_visuallyhidden">Dart package manager</h2>
           </div>
         </div>
         <p class="text">Find and use packages to build 
-          <a href="/flutter">Flutter</a> and 
-          <a href="/web">web</a> apps with 
-          <a target="_blank" rel="noopener" href="https://dart.dev">Dart</a>.
+          <a href="/dart">Dart</a> and 
+          <a href="/flutter">Flutter</a> apps.
         </p>
       </div>
     </div>