For the issue described in #198.
From the upstream 1.5.1 release:
https://github.com/pseudomuto/protoc-gen-doc/releases/tag/v1.5.1
```console
$ sha256sum *.tar.gz
f429e5a5ddd886bfb68265f2f92c1c6a509780b7adcaf7a8b3be943f28e144ba protoc-gen-doc_1.5.1_darwin_amd64.tar.gz
6e8c737d9a67a6a873a3f1d37ed8bb2a0a9996f6dcf6701aa1048c7bd798aaf9 protoc-gen-doc_1.5.1_darwin_arm64.tar.gz
47cd72b07e6dab3408d686a65d37d3a6ab616da7d8b564b2bd2a2963a72b72fd protoc-gen-doc_1.5.1_linux_amd64.tar.gz
172e6a191daced8eb31ebcd90d4523a1affa6d07900a89b548421823dda796fe protoc-gen-doc_1.5.1_linux_arm64.tar.gz
8acf0bf64eda29183b4c6745c3c6a12562fd9a8ab08d61788cf56e6659c66b3b protoc-gen-doc_1.5.1_windows_amd64.tar.gz
bf8bc651c17e64bfec663192e660655c2bcc415f6dff9e88201d8b07fb23d493 protoc-gen-doc_1.5.1_windows_arm64.tar.gz
```