Merge pull request #449 from Silabs-ArjanB/ArjanB_obiv13

Updated to OBI v1.3

Author: Silabs-ArjanB

docs/user_manual/source/intro.rst

@@ -54,8 +54,8 @@ It follows these specifications:
 .. [RISC-V-CRYPTO] RISC-V Cryptography Extensions Volume I, Scalar & Entropy Source Instructions, Version v1.0.0, 2'nd December, 2021: Ratified,
    https://github.com/riscv/riscv-crypto/releases/download/v1.0.0-scalar/riscv-crypto-spec-scalar-v1.0.0.pdf
 
-.. [OPENHW-OBI] OpenHW Open Bus Interface (OBI) protocol, version 1.2,
-   https://github.com/openhwgroup/core-v-docs/blob/master/cores/obi/OBI-v1.2.pdf
+.. [OPENHW-OBI] OpenHW Open Bus Interface (OBI) protocol, version 1.3,
+   https://github.com/openhwgroup/core-v-docs/blob/master/cores/obi/OBI-v1.3.pdf
 
 .. [OPENHW-XIF] OpenHW eXtension Interface, revision 458c8a73,
    https://docs.openhwgroup.org/projects/openhw-group-core-v-xif/