[llvm] [RISCV][Docs] Removed 'specified in' text from SiFive custom instruction links. NFC (PR #187817)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-aarch64-linux-bootstrap-hwasan` running on `sanitizer-buildbot11` while building `llvm` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/55/builds/25756

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 2 (annotate) failure: 'python ../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py' (failure)
...
Previous HEAD position was 93d256b076b1 [llvm-pdbutil] Hash type records in yaml2pdb (#187593)
HEAD is now at 34203a53b60d [RISCV][Docs] Removed 'specified in' text from SiFive custom instruction links. NFC (#187817)
HEAD detached at 34203a53b60d
nothing to commit, working tree clean
commit 34203a53b60dc79a956ff67a21b08eb9f7660da1
Author: Craig Topper <craig.topper at sifive.com>
Date:   Sat Mar 21 11:22:28 2026 -0700

    [RISCV][Docs] Removed 'specified in' text from SiFive custom instruction links. NFC (#187817)
    
    The URL isn't printed, the text in the backticks is the link text.

@@@BUILD_STEP stage1 build all@@@
Ubuntu clang version 20.1.2 (0ubuntu1)
Target: aarch64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/lib/llvm-20/bin
Found candidate GCC installation: /usr/lib/gcc-cross/aarch64-linux-gnu/14
Found candidate GCC installation: /usr/lib/gcc/aarch64-linux-gnu/14
Selected GCC installation: /usr/lib/gcc/aarch64-linux-gnu/14
Candidate multilib: .;@m64
Selected multilib: .;@m64
+ /usr/bin/cmake -DLLVM_APPEND_VC_REV=OFF -GNinja -DCMAKE_BUILD_TYPE=Release -DCMAKE_DISABLE_PRECOMPILE_HEADERS=ON -DLLVM_CCACHE_BUILD=ON -DLLVM_USE_LINKER=lld -DPython3_EXECUTABLE=/home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-venv/bin/python -DLLVM_ENABLE_ASSERTIONS=ON '-DLLVM_ENABLE_PROJECTS='\''clang;lld'\''' '-DLLVM_ENABLE_RUNTIMES='\''compiler-rt;libunwind;libcxx;libcxxabi'\''' -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ /home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-project/llvm
-- bolt project is disabled
-- clang project is enabled
-- clang-tools-extra project is disabled
-- cross-project-tests project is disabled
-- lld project is enabled
-- lldb project is disabled
-- mlir project is disabled
-- polly project is disabled
-- flang project is disabled
-- libc project is disabled
-- compiler-rt project is disabled
-- Doxygen disabled.
CMake Error at /usr/share/cmake-3.31/Modules/FindPackageHandleStandardArgs.cmake:233 (message):
  Could NOT find Python3 (missing: Interpreter) (Required is at least version
  "3.8")

      Reason given by package: 
          Interpreter: Cannot run the interpreter "/home/b/sanitizer-aarch64-linux-bootstrap-hwasan/build/llvm-venv/bin/python"

Call Stack (most recent call first):
  /usr/share/cmake-3.31/Modules/FindPackageHandleStandardArgs.cmake:603 (_FPHSA_FAILURE_MESSAGE)
  /usr/share/cmake-3.31/Modules/FindPython/Support.cmake:3997 (find_package_handle_standard_args)
  /usr/share/cmake-3.31/Modules/FindPython3.cmake:602 (include)
  CMakeLists.txt:1030 (find_package)


-- Configuring incomplete, errors occurred!

```

</details>

https://github.com/llvm/llvm-project/pull/187817