Adjust GMPNext imports

Co-authored-by: Björn Ricks <[email protected]>

Author: timopollmeier

gvm/protocols/gmp/_gmpnext.py

@@ -23,7 +23,7 @@ class GMPNext(GMPv227[T]):
 
         .. code-block:: python
 
-            from gvm.protocols.gmp import GMPNext as GMP
+            from gvm.protocols.gmp.next import GMP
 
             with GMP(connection) as gmp:
                 resp = gmp.get_tasks()

gvm/protocols/next.py

@@ -21,6 +21,7 @@
 
 from .gmp import (
     GMPNext as Gmp,
+    GMPNext as GMP,
 )
 from .ospv1 import Osp