Use [~username] in comments

[funcode]

I tried to put [~username] into a comment, but it is turned into \[](\~username\) when I view it via "jira issue view". On the web page, it is displayed as \[\~username\] when viewed as text.

$ jira version
(Version="1.4.0", GitCommit="eb842e18014303a575fde8e19508b3c7c13982c5", CommitDate="2023-05-09T07:09:45+00:00", GoVersion="go1.19.4", Compiler="gc", Platform="darwin/amd64")

SERVER INFO
-----------

Version:         8.20.15
Build Number:    820015
Deployment Type: Server
Default Locale:```

[funcode]

Duplicate with #407