docs(instrumentation-graphql): gql supported versions

[jDzames]

Which problem is this PR solving?

• GQL instrumentation doc incorrectly stating supported versions are only <16.

Short description of the changes

• README update to fix supported versions by the instrumentation (PR feat: support graphql v16 #998 should allow to also use GQL version 16, but doc still mentioned only <16).

[linux-foundation-easycla]

• ❌ - login: @jDzames / name: Jozef Džama . The commit (06c9160, 26a51a8) is not authorized under a signed CLA. Please click here to be authorized. For further assistance with EasyCLA, please submit a support request ticket.

[codecov]

Codecov Report

Merging #1322 (26a51a8) into main (912cde1) will decrease coverage by 4.46%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1322      +/-   ##
==========================================
- Coverage   96.08%   91.62%   -4.47%     
==========================================
  Files          14       23       +9     
  Lines         893     1611     +718     
  Branches      191      357     +166     
==========================================
+ Hits          858     1476     +618     
- Misses         35      135     +100     

Impacted Files	Coverage Δ
...tapackages/auto-instrumentations-node/src/utils.ts	98.21% <0.00%> (ø)
...try-instrumentation-graphql/src/instrumentation.ts	92.85% <0.00%> (ø)
...entelemetry-instrumentation-graphql/src/symbols.ts	100.00% <0.00%> (ø)
.../opentelemetry-instrumentation-graphql/src/enum.ts	100.00% <0.00%> (ø)
...opentelemetry-instrumentation-graphql/src/utils.ts	93.17% <0.00%> (ø)
...nstrumentation-graphql/src/enums/AttributeNames.ts	100.00% <0.00%> (ø)
...etry-instrumentation-mongodb/src/internal-types.ts	100.00% <0.00%> (ø)
...try-instrumentation-mongodb/src/instrumentation.ts	68.93% <0.00%> (ø)
...etry-instrumentation-graphql/src/internal-types.ts	100.00% <0.00%> (ø)

[blumamir]

@jDzames you will need to sign the CLA so we can merge this.

[jDzames]

@blumamir I see, not worth the "trouble" for me just for this one line of code (maybe later 🤷‍♂️). Someone please update it, I am closing this PR 🙂