fixup! [RISCV] Support svukte extension

Author: 4vtomat

llvm/docs/RISCVUsage.rst

@@ -158,7 +158,6 @@ on support follow.
      ``Svinval``       Assembly Support
      ``Svnapot``       Assembly Support
      ``Svpbmt``        Supported
-     ``Svukte``        Supported
      ``Svvptc``        Supported
      ``V``             Supported
      ``Za128rs``       Supported (`See note <#riscv-profiles-extensions-note>`__)
@@ -330,6 +329,9 @@ The primary goal of experimental support is to assist in the process of ratifica
 ``experimental-smctr``, ``experimental-ssctr``
   LLVM implements the `1.0-rc3 specification <https://github.com/riscv/riscv-control-transfer-records/releases/tag/v1.0_rc3>`__.
 
+``experimental-svukte``, ``experimental-svukte``
+  LLVM implements the `0.3 draft specification <https://github.com/riscv/riscv-isa-manual/pull/1564>`__.
+
 To use an experimental extension from `clang`, you must add `-menable-experimental-extensions` to the command line, and specify the exact version of the experimental extension you are using.  To use an experimental extension with LLVM's internal developer tools (e.g. `llc`, `llvm-objdump`, `llvm-mc`), you must prefix the extension name with `experimental-`.  Note that you don't need to specify the version with internal tools, and shouldn't include the `experimental-` prefix with `clang`.
 
 Vendor Extensions