CppSetupGuide.dox: update for VS2026

Author: Fedr

doxygen/general_pages/CppSetupGuide.dox

@@ -35,19 +35,20 @@ xcopy C:\meshlib-built\install\app\$(Configuration)\*.dll $(TargetDir)
 #### Prerequisites
  1. **Git**
   - [Install Git](https://git-scm.com/) to manage repositories and submodules, which is also required to install `vcpkg`.
- 2. **Visual Studio 2019 or 2022**
-  - [Download and install either Visual Studio 2019 or 2022](https://visualstudio.microsoft.com/). During installation, make sure to:
+ 2. **Visual Studio 2019, 2022 or 2026**
+  - [Download and install either Visual Studio 2019, 2022 or 2026](https://visualstudio.microsoft.com/). During installation, make sure to:
    - Select the "Desktop development with C++" workload.
    - Include support for the C++ programming language.
    - Ensure the English language pack is installed (required for `vcpkg`).
  3. **CUDA Toolkit**
   - For **Visual Studio 2019**: Install [CUDA v11.4](https://developer.nvidia.com/cuda-11-4-0-download-archive)
   - For **Visual Studio 2022**: Install [CUDA v12.0](https://developer.nvidia.com/cuda-12-0-0-download-archive)
+  - For **Visual Studio 2026**: Install [CUDA v13.2](https://developer.nvidia.com/cuda-13-2-0-download-archive)
  \n Choose the appropriate version based on your Visual Studio installation.
  4. **vcpkg**
   - To install `vcpkg`, follow these steps:
    1. **Open a command prompt (CMD) or PowerShell window**.
-   2. **Navigate to a directory where you want to install** `vcpkg`:
+   2. **Navigate to a directory where you want to install** `vcpkg` (please avoid using directories with special characters like `!` in full path):
 \code{.cmd}
 cd C:\path\to\your\desired\directory
 \endcode
@@ -60,7 +61,7 @@ git clone https://github.com/microsoft/vcpkg.git
 cd vcpkg
 git checkout 2024.10.21
 \endcode
-If you're using **Visual Studio 2022**, you can use the latest version of vcpkg:
+If you're using Visual Studio 2022 or 2026, you can use the latest version of vcpkg:
 \code{.cmd}
 git checkout 2026.03.18
 \endcode