tpm2_policynv.md Fix examples. #1828

Job	Run time
coverage-test	6m 12s
build-test (ubuntu-20.04, gcc)	5m 59s
master-tss-build-test (gcc)	17m 54s
build-test (ubuntu-20.04, clang)	4m 53s
master-tss-build-test (clang)	4m 53s
build-test (fedora-30, gcc)	5m 58s
coverity-test	0s
build-test (fedora-30, clang)	5m 18s
build-test (opensuse-leap, gcc)	6m 0s
build-test (opensuse-leap, clang)	5m 13s
build-test (fedora-32, gcc)	5m 47s
build-test (fedora-32, clang)	4m 58s
build-test (ubuntu-22.04, gcc)	11m 10s
build-test (ubuntu-22.04, clang)	10m 55s
	1h 35m 10s

Provide feedback