fix regex for manifest route

[marshall-orevillestudios]

I noticed that the regex would match other strings than manifest.json such as manifest-json or something-manifest.json

[jsjoeio]

I noticed that the regex would match other strings than manifest.json such as manifest-json or something-manifest.json

I'm guessing that wasn't intentional but let's double check with @code-asher.

[codecov[bot]]

Codecov Report

Merging #5219 (9f95fff) into main (04ff8c3) will not change coverage. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #5219   +/-   ##
=======================================
  Coverage   72.42%   72.42%           
=======================================
  Files          30       30           
  Lines        1672     1672           
  Branches      366      366           
=======================================
  Hits         1211     1211           
  Misses        398      398           
  Partials       63       63           

Impacted Files	Coverage Δ
src/node/routes/vscode.ts	83.33% <100.00%> (ø)

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[code-asher]

I think this was because there used to be a webmanifest.json link in addition to manifest.json? But as far as I can tell everything is manifest.json now. Could we get rid of the regex entirely and just do /manifest.json?

[jsjoeio]

@code-asher ready for review