Pkldoc: Module URI is cut off

Running
```
jbang run --main org.pkl.doc.Main "org.pkl-lang:pkl-doc:0.26.3" package://pkg.pkl-lang.org/github.com/stefma/pkl-gha/com.github.action@0.0.4 -o .out/doc
```

I got the following `Module URI` displayed:

There are a few characters just cut off 🤷

Also others are affected.
See https://jamesward.github.io/pklgha/pkg.pkl-lang.org/github.com/jamesward/pklgha/pklgha/current/ctionSwift/index.html

`ctionSwift` is even used in the URL instead of `GitHubActionSwift`.

Run the reported `jbang run --main org.pkl.doc.Main` command and inspect the generated output under `.out/doc`. Compare the displayed Module URI and generated links with the full module names, including the `GitHubActionSwift` example; done means no characters are truncated and generated URLs retain the complete names.

Written by the indexing model from the issue text.