Update README.md

Add URL to wikipedia and openhub

README.md

@@ -39,12 +39,12 @@ Each publisher has a single JSON file with straightforward properties. Notable p
   <li><code>country</code>: origin country of the publisher (<a href="https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2">ISO 3166-1 alpha-2</a>)</li>
   <li><code>presence</code>: countries the publisher has a presense (<a href="https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2">ISO 3166-1 alpha-2</a>)</li>
   <li><code>source_code_download</code>: link to an archive with all source code available under a <a href="https://www.gnu.org/licenses/license-list.en.html">Free Software license</a></li>
-  <li><code>source_code_profile</code>: link to the openhub source code profile</li>
+  <li><code>source_code_profile</code>: link to the <a href="https://www.openhub.net/">openhub</a> source code profile</li>
   <li>
     <code>commercial_support</code>: link to a page describing the type of commerical support provided for the respective Free Software
     (empty if commercial support is only available for another (version of the) software than the one that can be downloaded using <code>source_code_download</code>).  
   </li>
-  <li><code>wikipedia_url</code>: link to the wikipedia page of the Free Software</li>
+  <li><code>wikipedia_url</code>: link to the <a href="https://www.wikipedia.org/">wikipedia</a> page of the Free Software</li>
   <li><code>language</code>: the language of a success case (<a href="https://en.wikipedia.org/wiki/ISO_639-1">ISO 639-1</a>)</li>
 </ul>
 <p>