pom.xml: simplify the URL to the GitHub source repo

Author: generalmimon

pom.xml

@@ -35,7 +35,7 @@
   <scm>
     <connection>scm:git:git://github.com/kaitai-io/kaitai_struct_java_runtime.git</connection>
     <developerConnection>scm:git:ssh://github.com:kaitai-io/kaitai_struct_java_runtime.git</developerConnection>
-    <url>http://github.com/kaitai-io/kaitai_struct_java_runtime/tree/master</url>
+    <url>https://github.com/kaitai-io/kaitai_struct_java_runtime</url>
   </scm>
 
   <properties>