Revise README for project name and preview warning (#2850) #2456

Job	Run time
Javadoc	3m 38s
Unit test with docker service [JDK8]	14m 17s
Unit test with in-memory test service [Edge]	11m 28s
Unit test with cloud	4m 43s
Code format	1m 4s
Build native test server / Build native test server (ubuntu-latest, linux, amd64, true)	7m 24s
Build native test server / Build native test server (macos-latest, macOS, arm64)	6m 36s
Build native test server / Build native test server (windows-latest, windows, amd64)	5m 56s
Build native test server / Build native test server (ubuntu-24.04-arm, linux, arm64)	7m 16s
Build native test server / Build native test server (macos-15-intel, macOS, amd64)	7m 35s
Build native test server / Build native test server (ubuntu-latest, linux, amd64, false)	7m 12s
	1h 17m 9s

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