replaced word plugin with instrumentation

[niko-achilles]

Which problem is this PR solving?

• website_docs , consistency in using words plugin versus instrumentation. Replaced the word plugin with instrumentation

Short description of the changes

• The package for instrumentation of document load is named @opentelemetry/instrumentation-document-load . But the website_docs use often the word plugin in order to reference this instrumentation, e.g by informing the user to install the @opentelemetry/plugin-document-load . It should actually be: @opentelemetry/instrumentation-document-load

[linux-foundation-easycla]

The committers are authorized under a signed CLA.

• ✅ Niko Achilles Kokkinos (2f98ed7)

[johnbley]

Thanks for catching this!

[codecov]

Codecov Report

Merging #2352 (6d6ffa0) into main (68454a4) will decrease coverage by 0.13%.
The diff coverage is n/a.

❗ Current head 6d6ffa0 differs from pull request most recent head 2f98ed7. Consider uploading reports for the commit 2f98ed7 to get more accurate results

@@            Coverage Diff             @@
##             main    #2352      +/-   ##
==========================================
- Coverage   92.77%   92.63%   -0.14%     
==========================================
  Files         145      142       -3     
  Lines        5216     5091     -125     
  Branches     1068     1047      -21     
==========================================
- Hits         4839     4716     -123     
+ Misses        377      375       -2     

Impacted Files	Coverage Δ
...async-hooks/src/AsyncLocalStorageContextManager.ts
...ontext-async-hooks/src/AsyncHooksContextManager.ts
...sync-hooks/src/AbstractAsyncHooksContextManager.ts