Rebuild html files per UK -> GB country code

authors.html

@@ -735,7 +735,7 @@ author_handle: <a class="normal" href="https://github.com/ioccc-src/winner/blob/
 </div>
 <p>
 </p>
-Location: <a class="normal" href="location.html#UK">UK</a> - <em>United Kingdom</em>
+Location: <a class="normal" href="location.html#GB">GB</a> - <em>United Kingdom</em>
 <br>
 author_handle: <a class="normal" href="https://github.com/ioccc-src/winner/blob/master/author/Gavin_Barraclough.json">Gavin_Barraclough</a>
 <p>
@@ -1093,7 +1093,7 @@ author_handle: <a class="normal" href="https://github.com/ioccc-src/winner/blob/
 </div>
 <p>
 </p>
-Location: <a class="normal" href="location.html#UK">UK</a> - <em>United Kingdom</em>
+Location: <a class="normal" href="location.html#GB">GB</a> - <em>United Kingdom</em>
 <br>
 author_handle: <a class="normal" href="https://github.com/ioccc-src/winner/blob/master/author/Gavin_Buttimore.json">Gavin_Buttimore</a>
 <p>
@@ -3038,7 +3038,7 @@ author_handle: <a class="normal" href="https://github.com/ioccc-src/winner/blob/
 </div>
 <p>
 </p>
-Location: <a class="normal" href="location.html#UK">UK</a> - <em>United Kingdom</em>
+Location: <a class="normal" href="location.html#GB">GB</a> - <em>United Kingdom</em>
 <br>
 author_handle: <a class="normal" href="https://github.com/ioccc-src/winner/blob/master/author/Ian_Phillipps.json">Ian_Phillipps</a>
 <p>
@@ -3558,7 +3558,7 @@ author_handle: <a class="normal" href="https://github.com/ioccc-src/winner/blob/
 </div>
 <p>
 </p>
-Location: <a class="normal" href="location.html#UK">UK</a> - <em>United Kingdom</em>
+Location: <a class="normal" href="location.html#GB">GB</a> - <em>United Kingdom</em>
 <br>
 author_handle: <a class="normal" href="https://github.com/ioccc-src/winner/blob/master/author/Dean_Swift.json">Dean_Swift</a>
 <p>