Update P4 reference

p4.org seems to be down. Maybe due to the movement of P4 and the ONF portfolio to the LF.

Signed-off-by: Gergely Csatari <[email protected]>

doc/common/references.rst

@@ -77,7 +77,7 @@ Ref  Doc Number    Title
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 [N1] IETF-RFC 2544 "Benchmarking Methodology for Network Interconnect Devices". Available at `https://datatracker.ietf.org/doc/html/rfc2544 <https://datatracker.ietf.org/doc/html/rfc2544>`__.
 [N2] ITU-T Y.3500  "Information Technology – Cloud computing – Overview and vocabulary"; SERIES Y: Global Information Infrastructure, Internet Protocol Aspects and Next-Generation Networks: Cloud Computing. Available at `https://www.itu.int/rec/T-REC-Y.3500/recommendation.asp?lang=en&parent=T-REC-Y.3500-201408-I <https://www.itu.int/rec/T-REC-Y.3500/recommendation.asp?lang=en&parent=T-REC-Y.3500-201408-I>`__.
-[N3]               "P4 Language Consortium" (Packet Processing Programming). Available at `https://p4.org/ <https://p4.org/>`__.
+[N3]               "P4 Language Consortium" (Packet Processing Programming). Available at `https://opennetworking.org/p4/ <https://opennetworking.org/p4/>`__.
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 O-RAN, 5G and Miscellaenous References