[4.3] Fix `using Redot;` to `using Godot;` in docs #898

Job	Run time
📊 Static checks / Code style, file formatting, and docs	1m 14s
🍏 iOS / Template (target=template_release)	11m 39s
🍎 macOS / Editor (target=editor, tests=yes)	32m 33s
🤖 Android / Editor (target=editor)	24m 35s
🐧 Linux / Editor w/ Mono (target=editor)	42m 18s
🍎 macOS / Template (target=template_release)	18m 32s
🤖 Android / Template arm32 (target=template_release, arch=arm32)	16m 18s
🌐 Web / Template w/ threads (target=template_release, threads=yes)	7m 6s
🐧 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)	18m 44s
🤖 Android / Template arm64 (target=template_release, arch=arm64)	16m 49s
🌐 Web / Template w/o threads (target=template_release, threads=no)	7m 19s
🐧 Linux / Editor with clang sanitizers (target=editor, tests=yes, dev_build=yes, use_asan=yes, use_ubsan=yes, use_llvm=yes, linker=lld)	36m 27s
🏁 Windows / Editor (target=editor, tests=yes)	10m 20s
🐧 Linux / Editor with ThreadSanitizer (target=editor, tests=yes, dev_build=yes, use_tsan=yes, use_llvm=yes, linker=lld)	33m 21s
🏁 Windows / Template (target=template_release)	8m 7s
🐧 Linux / Template w/ Mono (target=template_release)	26m 55s
🐧 Linux / Minimal template (target=template_release, everything disabled)	15m 4s
🪲 Godot CPP / Build and test Godot CPP	8m 6s
	5h 35m 27s

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