Regression in connection URL calcuation in ServerApp

[jhamet93]

Addresses an unintentional regression in the calculation of the connection_url property of the ServerApp detailed in issue: #743

[codecov-commenter]

Codecov Report

Merging #761 (7e124c3) into main (e0c126f) will decrease coverage by 0.05%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##             main     #761      +/-   ##
==========================================
- Coverage   70.80%   70.74%   -0.06%     
==========================================
  Files          62       62              
  Lines        7627     7629       +2     
  Branches     1220     1221       +1     
==========================================
- Hits         5400     5397       -3     
- Misses       1850     1854       +4     
- Partials      377      378       +1     

Impacted Files	Coverage Δ
jupyter_server/serverapp.py	65.42% <66.66%> (+0.06%)	⬆️
jupyter_server/services/kernels/handlers.py	57.80% <0.00%> (-1.06%)	⬇️

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[blink1073]

@meeseeksdev please run pre-commit

[lumberbot-app]

Would you mind installing me on your fork so that I can update your branch?
Click hereto do that, and follow the instructions to add your fork.I'm going to try to push as a maintainer but this may not work.

[lumberbot-app]

I've applied "pre-commit" and pushed. You may have trouble pushing further
commits, but feel free to force push and ask me to run again.

[blink1073]

Thanks!