Module opentelemetry/instrumentation-grpc required

[pramodsreek]

This is a minor README.md update. It looks like we also need module @opentelemetry/instrumentation-grpc, otherwise we are getting module not found error.
% node -r ./tracing.js app.js
internal/modules/cjs/loader.js:888
throw err;
^

Error: Cannot find module '@opentelemetry/instrumentation-grpc'
Require stack:

• /tracing.js
• internal/preload
  at Function.Module._resolveFilename (internal/modules/cjs/loader.js:885:15)
  at Function.Module._load (internal/modules/cjs/loader.js:730:27)
  at Module.require (internal/modules/cjs/loader.js:957:19)
  at require (internal/modules/cjs/helpers.js:88:18)
  at Object. (/tracing.js:7:33)
  at Module._compile (internal/modules/cjs/loader.js:1068:30)
  at Object.Module._extensions..js (internal/modules/cjs/loader.js:1097:10)
  at Module.load (internal/modules/cjs/loader.js:933:32)
  at Function.Module._load (internal/modules/cjs/loader.js:774:14)
  at Module.require (internal/modules/cjs/loader.js:957:19) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [ '/tracing.js', 'internal/preload' ]
  }

Which problem is this PR solving?

• If we follow the README.md to try opentelemetry sample, we are getting a module not found error. We had to install @opentelemetry/instrumentation-grpc to resolve this issue.

Short description of the changes

• Added module @opentelemetry/instrumentation-grpc in npm install.

[linux-foundation-easycla]

The committers are authorized under a signed CLA.

• ✅ Pramod (3593464)

[codecov]

Codecov Report

Merging #2283 (bbdd662) into main (7860344) will increase coverage by 0.01%.
The diff coverage is n/a.

❗ Current head bbdd662 differs from pull request most recent head 541e3f1. Consider uploading reports for the commit 541e3f1 to get more accurate results

@@            Coverage Diff             @@
##             main    #2283      +/-   ##
==========================================
+ Coverage   92.68%   92.70%   +0.01%     
==========================================
  Files         145      145              
  Lines        5184     5184              
  Branches     1060     1060              
==========================================
+ Hits         4805     4806       +1     
+ Misses        379      378       -1     

Impacted Files	Coverage Δ
...emetry-api-metrics/src/platform/node/globalThis.ts	100.00% <0.00%> (+100.00%)	⬆️