Tweak GitHub links.

whatsnew.htm

@@ -39,7 +39,7 @@
 <li>Minor tweaks.</li>
 </ul>
 
-<p>Contributions via <a href="https://github.com/jrsoftware" target="_blank">GitHub</a>: Thanks to jogo- and Martin Prikryl for their contributions.<p>
+<p>Contributions via <a href="https://github.com/jrsoftware/issrc" target="_blank">GitHub</a>: Thanks to jogo- and Martin Prikryl for their contributions.<p>
 
 <p><a name="5.6.1"></a><span class="ver">5.6.1 </span><span class="date">(2018-06-14)</span></p>
 <ul>
@@ -81,7 +81,7 @@
 <li>Unicode [Code] based on RemObjects Pascal Script Git commit 76e377efa5fddc55b3a6a3a3d944317bdfde4a12.</li>
 <li>Minor tweaks.</li>
 </ul>
-<p>Contributions via <a href="https://github.com/jrsoftware" target="_blank">GitHub</a>: Thanks to ElSanchez, DRON and jogo- for their contributions for respectively Unicode input source support, improved image stretching, and various improvements. Thanks to KngStr for his proof of concept for ISPP compiler directive highlighting.<p>
+<p>Contributions via <a href="https://github.com/jrsoftware/issrc" target="_blank">GitHub</a>: Thanks to ElSanchez, DRON and jogo- for their contributions for respectively Unicode input source support, improved image stretching, and various improvements. Thanks to KngStr for his proof of concept for ISPP compiler directive highlighting.<p>
 
 <p><a href="http://www.jrsoftware.org/files/is5.5-whatsnew.htm">Inno Setup 5.5 &amp; Earlier Revision History</a></p>