Update clang format in build md (#745)

* Update the minimum version of clang-format to version 9

A small regression was created with this commit
6076d74
Variable AfterCaseLabel, was added in clang-format-9, so it is not
supported by version 8

* Update Clang Format version

- Changing the recommended version of clang-forant to version 15
- Changing the minimum version that supports formatting to versions 9,
change for is due to adding AfterCaseLabel in this commit 6076d74.
The AfterCaseLabel modifier was added in clang-format-9.

docs/build.md

@@ -161,7 +161,7 @@ adb shell setprop security.perf_harden 0
 
 ### Clang Format and Visual Studio
 
-Visual Studio comes with `clang-format-6` which is incompatible with some of the styles we use in our `.clang-format` file. It is recommended to point to a `clang-format-8.exe` binary within the in-built clang formatter, or disable it and use a third party extension that is more up to date.
+It is recommended to use `clang-format-15`, which is compatible with the styles in our `.clang-format` file. It is also used by CI and is a basic version installed with Visual Studio 2022. The minimum version that supports our current `.clang-format` file is `clang-format-9`.
 
 Go to the [LLVM downloads page](http://releases.llvm.org/download.html) to get clang.