Fix missing protocol on ports

[thespad]

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• [x] I have read the contributing guideline and understand that I have made the correct modifications

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Description:

Fix missing protocols from the port assignment in the readme.

Benefits of this PR and context:

How Has This Been Tested?

Source / References:

[LinuxServer-CI]

I am a bot, here are the test results for this PR: https://ci-tests.linuxserver.io/lspipepr/syslog-ng/3.30.1-r1-pkg-3ce8eb49-pr-3/index.html https://ci-tests.linuxserver.io/lspipepr/syslog-ng/3.30.1-r1-pkg-3ce8eb49-pr-3/shellcheck-result.xml