Wrap init_process_group method since it is too long in built doc

Author: gunandrose4u

intermediate_source/ddp_tutorial.rst

@@ -87,7 +87,12 @@ be found in
             init_method="file:///{your local file path}"
 
             # initialize the process group
-            dist.init_process_group("gloo", init_method=init_method, rank=rank, world_size=world_size)
+            dist.init_process_group(
+                "gloo",
+                init_method=init_method,
+                rank=rank,
+                world_size=world_size
+            )
         else:
             os.environ['MASTER_ADDR'] = 'localhost'
             os.environ['MASTER_PORT'] = '12355'