Fix typo in Platforms.cmake (#7588)

.github/workflows/Windows9x_MinGW.yml

@@ -42,7 +42,7 @@ jobs:
     - name: Configure CMake
       shell: bash
       working-directory: ${{github.workspace}}
-      run: cmake -S. -Bbuild-windows9x -DCMAKE_BUILD_TYPE=Release -DBUILD_TESTING=OFF -DCPACK=ON -DCMAKE_TOOLCHAIN_FILE=../CMake/platforms/mingw9x.toolchain.cmake -DTARGET_PLATORM=windows9x
+      run: cmake -S. -Bbuild-windows9x -DCMAKE_BUILD_TYPE=Release -DBUILD_TESTING=OFF -DCPACK=ON -DCMAKE_TOOLCHAIN_FILE=../CMake/platforms/mingw9x.toolchain.cmake -DTARGET_PLATFORM=windows9x
 
     - name: Build
       working-directory: ${{github.workspace}}

CMake/Platforms.cmake

@@ -29,7 +29,7 @@ elseif(TARGET_PLATFORM STREQUAL "lepus")
   include(platforms/lepus)
 elseif(TARGET_PLATFORM STREQUAL "miyoo_mini")
   include(platforms/miyoo_mini)
-elseif(TARGET_PLATORM STREQUAL "windows9x")
+elseif(TARGET_PLATFORM STREQUAL "windows9x")
   include(platforms/windows9x)
 elseif(WIN32)
   include(platforms/windows)