Tidy the examples in README.md a bit #114

Job	Run time
build (5.15.2, windows-msvc, windows-2022)	56s
build (5.15.2, windows-mingw, windows-2022, win64_mingw81, win64_mingw, -DCMAKE_C_COMPILER:FILEPA...	49s
build (5.15.2, linux, ubuntu-22.04, -GNinja)	41s
build (5.15.2, android, ubuntu-22.04, android, android, android_arm64_v8a, -DANDROID_ABI:STRING=a...	51s
build (5.15.2, macos, macos-12)	56s
build (5.15.2, ios, macos-12, ios, -DCMAKE_FIND_ROOT_PATH:PATH=$Qt5_DIR$Qt6_DIR, -DCMAKE_PREFIX_P...	6m 11s
build (6.5.3, windows-msvc, windows-2022)	1m 50s
build (6.5.3, windows-mingw, windows-2022, win64_mingw81, win64_mingw, -DCMAKE_C_COMPILER:FILEPAT...	55s
build (6.5.3, linux, ubuntu-22.04, -GNinja)	54s
build (6.5.3, android, ubuntu-22.04, android, android, android_arm64_v8a, -DANDROID_ABI:STRING=ar...	1m 8s
build (6.5.3, macos, macos-12)	1m 10s
build (6.5.3, ios, macos-12, ios, -DCMAKE_FIND_ROOT_PATH:PATH=$Qt5_DIR$Qt6_DIR, -DCMAKE_PREFIX_PA...	3m 43s
	20m 4s

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