Fix some differences between ShapeCast2D and ShapeCast3D documentation #670

Job	Run time
📊 Static checks / Code style, file formatting, and docs	21s
🤖 Android / Editor (target=editor)	3m 28s
🍎 macOS / Editor (target=editor, tests=yes)	3m 7s
🤖 Android / Template arm32 (target=template_release, arch=arm32)	2m 58s
🐧 Linux / Editor w/ Mono (target=editor)	3m 18s
🍏 iOS / Template (target=template_release)	1m 36s
🍎 macOS / Template (target=template_release)	2m 51s
🤖 Android / Template arm64 (target=template_release, arch=arm64)	3m 2s
🐧 Linux / Editor with doubles and GCC sanitizers (target=editor, tests=yes, dev_build=yes, scu_build=yes, precision=double, use_asan=yes, use_ubsan=yes, linker=gold)	10m 28s
🐧 Linux / Editor with clang sanitizers (target=editor, tests=yes, dev_build=yes, use_asan=yes, use_ubsan=yes, use_llvm=yes, linker=lld)	5m 44s
🌐 Web / Template w/ threads (target=template_release, threads=yes)	5m 59s
🐧 Linux / Editor with ThreadSanitizer (target=editor, tests=yes, dev_build=yes, use_tsan=yes, use_llvm=yes, linker=lld)	6m 13s
🏁 Windows / Editor (target=editor, tests=yes)	47m 23s
🐧 Linux / Template w/ Mono (target=template_release)	1m 50s
🌐 Web / Template w/o threads (target=template_release, threads=no)	7m 7s
🏁 Windows / Template (target=template_release)	8m 12s
🐧 Linux / Minimal template (target=template_release, everything disabled)	1m 0s
🪲 Godot CPP / Build and test Godot CPP	8m 19s
	2h 2m 56s

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