doc: update supported Windows SDK version to 11

PR-URL: #61973
Refs: #61864
Reviewed-By: Stefan Stojanovic <stefan.stojanovic@janeasystems.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>

Author: MikeMcC399

BUILDING.md

@@ -154,11 +154,11 @@ platforms. This is true regardless of entries in the table below.
 
 Depending on the host platform, the selection of toolchains may vary.
 
-| Operating System | Compiler Versions                                                         |
-| ---------------- | ------------------------------------------------------------------------- |
-| Linux            | GCC >= 12.2 or Clang >= 19.1                                              |
-| Windows          | Visual Studio 2022 or 2026 with the Windows 10 or 11 SDK on a 64-bit host |
-| macOS            | Xcode >= 16.4 (Apple LLVM >= 19)                                          |
+| Operating System | Compiler Versions                                                   |
+| ---------------- | ------------------------------------------------------------------- |
+| Linux            | GCC >= 12.2 or Clang >= 19.1                                        |
+| Windows          | Visual Studio 2022 or 2026 with the Windows 11 SDK on a 64-bit host |
+| macOS            | Xcode >= 16.4 (Apple LLVM >= 19)                                    |
 
 ### Official binary platforms and toolchains