[SYCL][Doc] Update GetStartedGuide pre-requisiste (#17565)

This patch reformats the pre-requisites in a table (doesn't look great
in the markdown, but looks good when generated).

It also updates the required versions for CMake and Python to link to
the versions required by LLVM. For CMake we were already documenting the
same version as LLVM. For Python we didn't document any minimum version,
but we extensively use LLVM scripts like `lit`, so we really should be
aligned with it.

There's a few requirements for which we don't have minimum versions, but
we can update that if we ever run into issues with them.

Addresses #17478 by documenting the
minimum required python version.

Author: npmiller

sycl/doc/GetStartedGuide.md

@@ -39,15 +39,14 @@ and a wide range of compute accelerators such as GPU and FPGA.
 
 ## Prerequisites
 
-* `git` - [Download](https://git-scm.com/downloads)
-* `cmake` version 3.20 or later - [Download](http://www.cmake.org/download/)
-* `python` - [Download](https://www.python.org/downloads/)
-* `ninja` -
-[Download](https://github.com/ninja-build/ninja/wiki/Pre-built-Ninja-packages)
-* `hwloc` version 2.3 or later (Linux only)
-  * libhwloc-dev or hwloc-devel package on linux
-* C++ compiler
-  * See LLVM's [host compiler toolchain requirements](https://github.com/intel/llvm/blob/sycl/llvm/docs/GettingStarted.rst#host-c-toolchain-both-compiler-and-standard-library)
+| Software                                                                    | Version                                                                                                                              |
+| ---                                                                         | ---                                                                                                                                  |
+| [Git](https://git-scm.com/downloads)                                        |                                                                                                                                      |
+| [CMake](http://www.cmake.org/download/)                                     | [See LLVM](https://github.com/intel/llvm/blob/sycl/llvm/docs/GettingStarted.rst#software)                                            |
+| [Python](https://www.python.org/downloads/)                                 | [See LLVM](https://github.com/intel/llvm/blob/sycl/llvm/docs/GettingStarted.rst#software)                                            |
+| [Ninja](https://github.com/ninja-build/ninja/wiki/Pre-built-Ninja-packages) |                                                                                                                                      |
+| `hwloc`                                                                     | >= 2.3 (Linux only, `libhwloc-dev` or `hwloc-devel`)                                                                                 |
+| C++ compiler                                                                | [See LLVM](https://github.com/intel/llvm/blob/sycl/llvm/docs/GettingStarted.rst#host-c-toolchain-both-compiler-and-standard-library) |
 
 Alternatively, you can create a Docker image that has everything you need for
 building pre-installed using the [Ubuntu 24.04 build Dockerfile](https://github.com/intel/llvm/blob/sycl/devops/containers/ubuntu2404_build.Dockerfile).