fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! Build SDL3 for ReadTheDocs workflow

Author: HexDecimal

.readthedocs.yaml

@@ -17,8 +17,8 @@ build:
   jobs:
     pre_install:
       - git clone --depth 1 --branch release-3.2.16 https://github.com/libsdl-org/SDL.git sdl_repo
-      - cmake -S sdl_repo -B sdl_build
-      - cmake --build sdl_build --config Debug --prefix ~/.local
+      - cmake -S sdl_repo -B sdl_build -DCMAKE_INSTALL_PREFIX=~/.local
+      - cmake --build sdl_build --config Debug
       - cmake --install sdl_build --config Debug --prefix ~/.local
       - cat ~/.local/lib/pkgconfig/sdl3.pc