[Doc] Fix some incorrect uses of "children" #24325

Job	Run time
📊 Static checks / Code style, file formatting, and docs	51s
🤖 Android / Template (target=template_release)	29m 25s
🐧 Linux / Editor w/ Mono (target=editor)	38m 10s
🍎 macOS / Editor (target=editor, tests=yes)	24m 7s
🐧 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)	38m 58s
🍎 macOS / Template (target=template_release)	35m 37s
🐧 Linux / Editor with clang sanitizers (target=editor, tests=yes, dev_build=yes, use_asan=yes, use_ubsan=yes, use_llvm=yes, linker=lld)	34m 2s
🌐 Web / Template w/ threads (target=template_release, threads=yes)	22m 10s
🐧 Linux / Editor with ThreadSanitizer (target=editor, tests=yes, dev_build=yes, use_tsan=yes, use_llvm=yes, linker=lld)	30m 4s
🏁 Windows / Editor (target=editor, tests=yes)	44m 39s
🌐 Web / Template w/o threads (target=template_release, threads=no)	21m 56s
🐧 Linux / Template w/ Mono (target=template_release)	22m 19s
🏁 Windows / Template (target=template_release)	30m 43s
🐧 Linux / Minimal template (target=template_release, everything disabled)	15m 20s
🍏 iOS / Template (target=template_release)	15m 29s
🪲 Godot CPP / Build and test Godot CPP	6m 55s
	6h 50m 45s

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