Quote add to slack URL

[nicolls1]

Summary

I needed to customize the install route and I noticed that the href URL isn't quoted.

Requirements (place an x in each [ ])

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.

[CLAassistant]

All committers have signed the CLA.

[codecov]

Codecov Report

Merging #1323 (697301b) into main (7891454) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1323   +/-   ##
=======================================
  Coverage   72.88%   72.88%           
=======================================
  Files          17       17           
  Lines        1479     1479           
  Branches      442      442           
=======================================
  Hits         1078     1078           
  Misses        311      311           
  Partials       90       90           

Impacted Files	Coverage Δ
src/receivers/render-html-for-install-path.ts	75.00% <ø> (ø)

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[mwbrooks]

Hi @nicolls1 👋🏻

Thanks a lot for the pull request and congrats on your first-contribution to bolt-js!

Before we can approve and merge your pull request, can you please sign the CLA (Contributor License Agreement)? 🙇🏻

[nicolls1]

Sorry, just had to double check it with my company but good to go now!

[nicolls1]

Merging was blocked by being behind master and is now blocked by waiting for workflow. Feel free to merge or I can after workflow approval :)