docs: fix rendering of tracer.startActiveSpan examples

[trentm]

Before (at https://open-telemetry.github.io/opentelemetry-js-api/interfaces/tracer.html):

after:

https://typedoc.org/guides/doccomments/ doesn't document the @example tag that I could see, so this is a guess that it meets the requirements to get picked up as a code block (given Markdown requires 4 leading spaces for that).

[codecov]

Codecov Report

Merging #107 (87db2bb) into main (14655bc) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #107   +/-   ##
=======================================
  Coverage   94.89%   94.89%           
=======================================
  Files          42       42           
  Lines         568      568           
  Branches       89       89           
=======================================
  Hits          539      539           
  Misses         29       29           

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[naseemkullah]

lgtm, but seems to be a dupe of #101

happy to see either of these merged

[trentm]

seems to be a dupe of #101

Ah, I hadn't looked. Thanks for finding the dupe. Likewise I'm happy for either one to get merged.

[johnbley]

Yes, either 107 or 101 look great.

[dyladan]

Dupe of #101