docs: fix gif, readme, etc (#5) #31

Job	Run time
Lint	32s
Test (ubuntu-latest)	32s
Build (ubuntu-latest, aarch64-unknown-linux-gnu)	1m 22s
Verify Skills	38s
Build (macos-latest, aarch64-apple-darwin)	57s
Test (macos-latest)	34s
Build (windows-latest, x86_64-pc-windows-msvc)	2m 39s
Policy Check	5s
Coverage	35s
Build (ubuntu-latest, x86_64-unknown-linux-gnu)	1m 11s
Build (macos-latest, x86_64-apple-darwin)	49s
API Smoketest	19s
	10m 13s

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