docs(coprocessor): fix incorrect content in KMSVerifier section of co… #4441

Job	Run time
sdk-rust-sdk-tests/check-changes	5s
sdk-rust-sdk-tests/start-runner	-1s
sdk-rust-sdk-tests/test-rust-sdk (bpr)	0s
sdk-rust-sdk-tests/stop-runner	0s
	4s

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