Use real URIs in example docs to satisfy CRAN

Author: nacnudus

inst/extdata/url.html

@@ -16,12 +16,12 @@
     <br/>
     <table>
       <tr>
-        <td colspan="2"><a href="example1.co.nz">Scraping</a> <a href="example2.co.nz">HTML.</a></td>
+        <td colspan="2"><a href="https://www.r-project.org">Scraping</a> <a href="https://cran.r-project.org/index.html">HTML.</a></td>
       </tr>
       <tr>
-        <td><a href="example3.co.nz">Sweet</a></td>
-        <td><a href="example4.co.nz">as?</a></td>
-          <td><a href="example5.co.nz">Yeah,</a><br/><a href="http://www.tui.co.nz/">right.</a></td>
+        <td><a href="https://cran.r-project.org/">Sweet</a></td>
+        <td><a href="https://cran.r-project.org/package=unpivotr">as?</a></td>
+          <td><a href="https://cran.r-project.org/package=tidyxl">Yeah,</a><br/><a href="http://www.tui.co.nz/">right.</a></td>
       </tr>
     </table>
   </body>