Update issues link

Author: natanfelles

guide/index.rst

@@ -615,6 +615,6 @@ The more you use it, the more you will learn.
 .. note::
     Did you find something wrong? 
     Be sure to let us know about it with an
-    `issue <https://gitlab.com/aplus-framework/libraries/database/issues>`_. 
+    `issue <https://github.com/aplus-framework/database/issues>`_. 
     Thank you!