Update getting_started.rst

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@ -12,7 +12,7 @@ The RISC-V Privileged Architecture specifies several read-only CSRs that identif
These are ``mvendorid``, ``marchid`` and ``mimpid``.
The fixed, read-only values for these CSRs are defined in :file:`rtl/cve2_pkg.sv`.
Implementers should carefully consider appropriate values for these registers.
Ibex, as an open source implementation, has an assigned architecture ID (``marchid``) of of 0x23 (equivalent to 0d35).
Ibex, as an open source implementation, has an assigned architecture ID (``marchid``) of 0x23 (equivalent to 0d35).
(Allocations are specified in `marchid.md of the riscv-isa-manual repository <https://github.com/riscv/riscv-isa-manual/blob/master/marchid.md>`_.)
If significant changes are made to the micro-architecture a different architecture ID should be used.
The vendor ID and implementation ID (``mvendorid`` and ``mimpid``). The vendor ID (mvendorid) is assigned the value 0x602 and the implementation ID (mimpid) is assigned the value 0x0.