Sync SDL3 wiki -> header

[ci skip]

docs/README-vita.md

@@ -10,10 +10,10 @@ Credit to
 Building
 --------
 To build for the PSVita, make sure you have vitasdk and cmake installed and run:
-```
-   cmake -S. -Bbuild -DCMAKE_TOOLCHAIN_FILE=${VITASDK}/share/vita.toolchain.cmake -DCMAKE_BUILD_TYPE=Release
-   cmake --build build
-   cmake --install build
+```sh
+cmake -S. -Bbuild -DCMAKE_TOOLCHAIN_FILE=${VITASDK}/share/vita.toolchain.cmake -DCMAKE_BUILD_TYPE=Release
+cmake --build build
+cmake --install build
 ```