[Docs] Fix the description about %clang_cpp

[parabola94]

No description provided.

[llvmbot]

@llvm/pr-subscribers-clang

@llvm/pr-subscribers-testing-tools

Author: None (parabola94)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/152842.diff

1 Files Affected:

• (modified) llvm/docs/TestingGuide.rst (+1-1)

diff --git a/llvm/docs/TestingGuide.rst b/llvm/docs/TestingGuide.rst
index b1819c795bab4..e6a27849f13be 100644
--- a/llvm/docs/TestingGuide.rst
+++ b/llvm/docs/TestingGuide.rst
@@ -834,7 +834,7 @@ Besides replacing LLVM tool names, the following substitutions are performed in
    Invokes the Clang driver.
 
 ``%clang_cpp``
-   Invokes the Clang driver for C++.
+   Invokes the Clang preprocessor.
 
 ``%clang_cl``
    Invokes the CL-compatible Clang driver.