Update docs to reflect beta feature #442

Job	Run time
Detect Go toolchain version	7s
Parse version file	4s
generate-metadata-file	24s
upload-terraform-registry-manifest-artifact	5s
Go 1.24 freebsd amd64 build	1m 29s
Go 1.24 windows amd64 build	1m 36s
Go 1.24 linux arm build	1m 33s
Go 1.24 linux amd64 build	1m 21s
Go 1.24 freebsd 386 build	1m 24s
Go 1.24 linux 386 build	1m 20s
Go 1.24 windows 386 build	1m 32s
Go 1.24 freebsd arm build	1m 24s
Go 1.24 linux arm64 build	1m 33s
Go 1.24 darwin amd64 build	1m 27s
Go 1.24 darwin arm64 build	1m 31s
What's next?	4s
	16m 54s

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