chore: update windows building guide

BUILDING.md

@@ -24,35 +24,25 @@ You can figure out which files you need by looking at each of the `ExternalProje
 
 1. Install Visual Studio 2022.
 
-2. Install CMake (http://www.cmake.org/download/).
+2. Install 7-zip (https://www.7-zip.org/).
 
-3. Install 7-zip (https://www.7-zip.org/).
-
-4. `git clone --single-branch --branch master https://github.com/CasparCG/server casparcg-server-master`
+3. `git clone --single-branch --branch master https://github.com/CasparCG/server casparcg-server-master`
 
-5. `cd casparcg-server-master`
+4. `cd casparcg-server-master`
 
-6. `.\tools\windows\build.bat`
+5. `.\tools\windows\build.bat`
 
-7. Copy the `dist\casparcg_server.zip` file for distribution
+6. Copy the `dist\casparcg_server.zip` file for distribution
 
 ## Development using Visual Studio
 
 1. Install Visual Studio 2022.
 
-2. Install CMake (http://www.cmake.org/download/).
-
 3. `git clone --single-branch --branch master https://github.com/CasparCG/server casparcg-server-master`
 
-4. `cd casparcg-server-master`
-
-5. `mkdir build`
-
-6. `cd build`
-
-7. `cmake -G "Visual Studio 17 2022" -A x64 ../src`
+4. Open the cloned folder in Visual Studio.
 
-8. Open `CasparCG Server.sln`
+5. Build All and ensure it builds successfully
 
 # Linux
 
@@ -97,4 +87,4 @@ If all goes to plan, a folder called 'staging' has been created with everything
 
 -DUSE_SYSTEM_CEF=OFF - (Linux only, default ON) use the version of CEF from your OS. This expects to be using builds from https://launchpad.net/~casparcg/+archive/ubuntu/ppa
 
--DDIAG_FONT_PATH - Specify an alternate path/font to use for the DIAG window. On linux, this will often want to be set to an absolute path of a font
+-DDIAG_FONT_PATH - Specify an alternate path/font to use for the DIAG window. On linux, this will often want to be set to an absolute path of a font