Improve `rad init` wording — heartwood

Opening mostly to get familiar with radicle and get some hands on experience. The first commit removes a hardcoded value that was making the tests fail for me and the second improves the rad init cli text.

 ╭──────────────────────────────────────────────────────────────────────╮
 │ heartwood                                                            │
 ├──────────────────────────────────────────────────────────────────────┤
 │ 001   ●   58fff44    No license file    issue    open      bob   now │
 │ 001   ●   [ ... ]    No license file    issue    open      bob   now │
 │ 002   ●   bob/copy   Change copyright   branch   created   bob   now │
 ╰──────────────────────────────────────────────────────────────────────╯
 ```

 ╭────────────────────────────────────────────────────────────────╮
 │ radicle-git                                                    │
 ├────────────────────────────────────────────────────────────────┤
 │ 003   ●   4dd5843   Copyright fixes   patch   open   bob   now │
 │ 003   ●   [ ... ]   Copyright fixes   patch   open   bob   now │
 ╰────────────────────────────────────────────────────────────────╯
 ╭──────────────────────────────────────────────────────────────────────╮
 │ heartwood                                                            │
 ├──────────────────────────────────────────────────────────────────────┤
 │ 001   ●   58fff44    No license file    issue    open      bob   now │
 │ 001   ●   [ ... ]    No license file    issue    open      bob   now │
 │ 002   ●   bob/copy   Change copyright   branch   created   bob   now │
 ╰──────────────────────────────────────────────────────────────────────╯
 ```

 ╭──────────────────────────────────────────────────────────────────────╮
 │ heartwood                                                            │
 ├──────────────────────────────────────────────────────────────────────┤
 │ 001   ●   58fff44    No license file    issue    open      bob   now │
 │ 001   ●   [ ... ]    No license file    issue    open      bob   now │
 │ 002       bob/copy   Change copyright   branch   created   bob   now │
 ╰──────────────────────────────────────────────────────────────────────╯
 ```

 ╭────────────────────────────────────────────────────────────────╮
 │ radicle-git                                                    │
 ├────────────────────────────────────────────────────────────────┤
 │ 003   ●   4dd5843   Copyright fixes   patch   open   bob   now │
 │ 003   ●   [ ... ]   Copyright fixes   patch   open   bob   now │
 ╰────────────────────────────────────────────────────────────────╯
 ```

 ``` (fail)
 $ rad init
 ✗ Error: a Git repository was not found at the current path
 ✗ Error: a Git repository was not found at the given path
 ```
 Ok so let's initialize one.

     let repo = match git::Repository::open(&path) {
         Ok(r) => r,
         Err(e) if radicle::git::ext::is_not_found_err(&e) => {
             anyhow::bail!("a Git repository was not found at the current path")
             anyhow::bail!("a Git repository was not found at the given path")
         }
         Err(e) => return Err(e.into()),
     };

                 term::format::dim("(RID)"),
                 term::format::highlight(rid.urn())
             );
             let directory = if path == cwd {
                 term::format::tertiary("this directory").to_string()
             } else {
                 term::format::tertiary(path.display()).to_string()
             };
             term::info!(
                 "You can show it any time by running {} from this directory.",
                 "You can show it any time by running {} from {directory}.",
                 term::format::command("rad .")
             );
             term::blank();