docs: add examples and gotchas for docs #151

Job	Run time
🆚 Get godot version / Get godot version	1s
📊 Static checks / Code style, file formatting, and docs	22s
🍏 iOS / Template (target=template_release)	1m 34s
🤖 Android / Template (target=template_release)	2m 28s
🐧 Linux / Editor w/ Mono (target=editor)	2m 19s
🍎 macOS / Editor (target=editor, tests=yes)	2m 35s
🐧 Linux / Template w/ Mono (target=template_release)	49s
🌐 Web / Template (target=template_release)	50s
🍎 macOS / Template (target=template_release)	2m 32s
🐧 Linux / Minimal template (target=template_release, everything disabled)	38s
🏁 Windows / Editor (target=editor, tests=yes)	2m 29s
🏁 Windows / Template (target=template_release)	2m 27s
✅ Check builds	1s
🦅 Release	1s
	19m 6s

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