Dotty

Fix remaining jna classpath entries in dist/bin/scaladoc* #643

Job	Run time
community_build_a	1s
community_build_b	1s
community_build_c	1s
MiMa	1s
test	1s
test_java8	0s
test_non_bootstrapped	1s
test_sbt	1s
test_windows_fast	1s
test_windows_full	1s
build-sdk-package / build	4m 33s
build-chocolatey-package / build	15s
test-chocolatey-package	0s
publish_nightly	0s
publish_release	0s
nightly_documentation	0s
open_issue_on_failure	0s
	4m 57s

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