docs(bindings/c): update docs for CMake replacing #7738

Job	Run time
build-c-doc	35s
build-dav-server-opendalfs-doc	47s
build-cpp-doc	32s
build-haskell-doc	2m 38s
build-java-doc	20s
build-fuse3-opendal-doc	57s
build-lua-doc	10s
build-nodejs-doc	25s
build-object-store-opendal-doc	41s
build-ocaml-doc	4m 41s
build-opendal-compat-doc	43s
build-parquet-opendal-doc	40s
build-python-doc	3m 8s
build-rust-doc	3m 53s
build-unftp-sbe-opendal-doc	1m 5s
build-virtiofs-opendal-doc	42s
build-website	3m 22s
	25m 19s

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