fix: sigfox links should be under networks

Author: alipsilv

config.toml

@@ -1369,20 +1369,6 @@ theme = "doc-theme"
     parent = "pybytes@connect"
     weight = 10
 
-[[menu.main]]
-    name = "DevKit contract"
-    url = "/pybytes/sigfox/devkit/"
-    identifier = "pybytes@sigfox@devkit"
-    parent = "pybytes@sigfox"
-    weight = 10
-
-[[menu.main]]
-    name = "Custom contract"
-    url = "/pybytes/sigfox/custom/"
-    identifier = "pybytes@sigfox@custom"
-    parent = "pybytes@sigfox"
-    weight = 20
-
 [[menu.main]]
     name = "Project Releases"
     url = "/pybytes/releases/"