[clang] Fix an inconsistency in UsersManual.rst (PR #179248)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Haojian Wu (hokein)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/179248.diff


1 Files Affected:

- (modified) clang/docs/UsersManual.rst (+1-1) 


``````````diff
diff --git a/clang/docs/UsersManual.rst b/clang/docs/UsersManual.rst
index c624efb26f67d..023e9a3c58834 100644
--- a/clang/docs/UsersManual.rst
+++ b/clang/docs/UsersManual.rst
@@ -129,7 +129,7 @@ Options to Control Error and Warning Messages
 .. This is in plain monospaced font because it generates the same label as
 .. -Werror, and Sphinx complains.
 
-``-Werror=foo``
+.. option:: -Werror=foo
 
   Turn warning "foo" into an error.
 

``````````

</details>


https://github.com/llvm/llvm-project/pull/179248