[PATCH] docs: it_IT: address invalid reference warnings

[Lukas Bulwahn <lukas.bulwahn@xxxxxxxxx>]

Documentation generation warns:

  it_IT/kernel-hacking/hacking.rst:
    WARNING: unknown document: ../core-api/symbol/namespaces

  it_IT/process/5.Posting.rst:
    WARNING: undefined label: it_email_clients

  it_IT/process/submitting-patches.rst:
    WARNING: undefined label: it_email_clients

  it_IT/process/howto.rst:
     WARNING: undefined label: it_managementstyle

Refer to English documentation, as Italian translation does not exist,
and add labels for Italian process documents to resolve label references.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@xxxxxxxxx>
---
Jonathan, please pick this quick fix of warnings.

applies on doc-next and next-20200529

 Documentation/translations/it_IT/kernel-hacking/hacking.rst   | 4 ++--
 Documentation/translations/it_IT/process/email-clients.rst    | 2 ++
 Documentation/translations/it_IT/process/management-style.rst | 2 ++
 3 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/Documentation/translations/it_IT/kernel-hacking/hacking.rst b/Documentation/translations/it_IT/kernel-hacking/hacking.rst
index 6aab27a8d323..e9a2e92134f0 100644
--- a/Documentation/translations/it_IT/kernel-hacking/hacking.rst
+++ b/Documentation/translations/it_IT/kernel-hacking/hacking.rst
@@ -634,7 +634,7 @@ Definita in ``include/linux/export.h``
 
 Questa è una variate di `EXPORT_SYMBOL()` che permette di specificare uno
 spazio dei nomi. Lo spazio dei nomi è documentato in
-:doc:`../core-api/symbol-namespaces`
+:doc:`../../../core-api/symbol-namespaces`
 
 :c:func:`EXPORT_SYMBOL_NS_GPL()`
 --------------------------------
@@ -643,7 +643,7 @@ Definita in ``include/linux/export.h``
 
 Questa è una variate di `EXPORT_SYMBOL_GPL()` che permette di specificare uno
 spazio dei nomi. Lo spazio dei nomi è documentato in
-:doc:`../core-api/symbol-namespaces`
+:doc:`../../../core-api/symbol-namespaces`
 
 Procedure e convenzioni
 =======================
diff --git a/Documentation/translations/it_IT/process/email-clients.rst b/Documentation/translations/it_IT/process/email-clients.rst
index 89abf6d325f2..66d3d65776f7 100644
--- a/Documentation/translations/it_IT/process/email-clients.rst
+++ b/Documentation/translations/it_IT/process/email-clients.rst
@@ -3,6 +3,8 @@
 :Original: :doc:`../../../process/email-clients`
 :Translator: Alessia Mantegazza <amantegazza@xxxxxxxxxx>
 
+.. _it_email_clients:
+
 Informazioni sui programmi di posta elettronica per Linux
 =========================================================
 
diff --git a/Documentation/translations/it_IT/process/management-style.rst b/Documentation/translations/it_IT/process/management-style.rst
index c709285138a7..76ed074082ea 100644
--- a/Documentation/translations/it_IT/process/management-style.rst
+++ b/Documentation/translations/it_IT/process/management-style.rst
@@ -3,6 +3,8 @@
 :Original: :doc:`../../../process/management-style`
 :Translator: Alessia Mantegazza <amantegazza@xxxxxxxxxx>
 
+.. _it_managementstyle:
+
 Il modello di gestione del kernel Linux
 =======================================
 
-- 
2.17.1