[SYCL][DOC] Update documented clang-format version (#16660)

I changed the wording here also to cover the possibility that
documentation no longer reflects reality on the next bump.

Author: ldrumm

CONTRIBUTING.md

@@ -33,8 +33,9 @@ To contribute:
     [clang-tidy](https://clang.llvm.org/extra/clang-tidy/) tools can be
     integrated into your workflow to ensure formatting and stylistic
     compliance of your changes. To avoid code formatting misalignment with
-    GitHub Actions check we recommend using 10 version of clang-format tool
-    (default version on Ubuntu 22.04).
+    the GitHub Actions check we recommend using the same version of clang-format
+    as used in the CI. See [.github/workflows/pr-code-format.yml](https://github.com/intel/llvm/blob/sycl/.github/workflows/pr-code-format.yml)
+    for the current version.
   - Use
 
     ```bash