Update blockifier link in README (#4213) #1523

Job	Run time
Verify that version that triggered this workflow is greater than most recent release	11s
Build binaries	-1s
Build plugin binaries	-1s
dev-publish-plugin	-1s
dev-publish-std	0s
Publish snforge_scarb_plugin	0s
Create release	0s
Test binary	0s
Publish packages to the registry	0s
	8s

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