Update POM link. Thanks @JamieSinn for pointing out

pom.xml

@@ -16,7 +16,7 @@
 
     <name>Spigot-Parent</name>
     <description>Parent project for all Spigot modules.</description>
-    <url>https://github.com/EcoCityCraft/Spigot</url>
+    <url>https://github.com/SpigotMC/Spigot</url>
 
     <modules>
         <module>Spigot-Server</module>