docs: fix misspellings in README files #2049

Job	Run time
build_attest_all (buildconfigs/stage0_bin_tdx.sh)	27m 45s
build_attest_all (buildconfigs/oak_containers_system_image.sh)	34m 13s
build_attest_all (buildconfigs/oak_containers_stage1.sh)	32m 51s
build_attest_all (buildconfigs/stage0_bin.sh)	29m 44s
build_attest_all (buildconfigs/oak_containers_nvidia_system_image.sh)	16m 17s
build_attest_all (buildconfigs/oak_echo_enclave_app.sh)	28m 4s
build_attest_all (buildconfigs/endorscope_cli.sh)	24m 38s
build_attest_all (buildconfigs/oak_restricted_kernel_simple_io_channel.sh)	28m 24s
build_attest_all (buildconfigs/oak_functions_insecure_enclave_app.sh)	26m 34s
build_attest_all (buildconfigs/oak_containers_syslogd.sh)	14m 23s
build_attest_all (buildconfigs/oak_orchestrator.sh)	27m 38s
build_attest_all (buildconfigs/key_xor_test_app.sh)	27m 44s
build_attest_all (buildconfigs/oak_containers_kernel.sh)	31m 42s
build_attest_all (buildconfigs/oak_functions_enclave_app.sh)	28m 28s
build_attest_all (buildconfigs/oak_echo_raw_enclave_app.sh)	17m 16s
build_attest_all (buildconfigs/oak_containers_agent.sh)	24m 2s
build_attest_all (buildconfigs/oak_containers_orchestrator.sh)	32m 26s
build_attest_all (buildconfigs/private_memory_server.sh)	40m 41s
	8h 12m 50s

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