fix: typo in fastify description

[Flarna]

No description provided.

[codecov]

Codecov Report

Merging #891 (64dbb46) into main (0b42bde) will increase coverage by 0.10%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #891      +/-   ##
==========================================
+ Coverage   95.29%   95.39%   +0.10%     
==========================================
  Files          10       15       +5     
  Lines         701      912     +211     
  Branches      142      181      +39     
==========================================
+ Hits          668      870     +202     
- Misses         33       42       +9     

Impacted Files	Coverage Δ
...opentelemetry-instrumentation-fastify/src/utils.ts	87.50% <0.00%> (ø)
...telemetry-instrumentation-fastify/src/constants.ts	100.00% <0.00%> (ø)
...nstrumentation-fastify/src/enums/AttributeNames.ts	100.00% <0.00%> (ø)
...try-instrumentation-fastify/src/instrumentation.ts	97.29% <0.00%> (ø)
...tapackages/auto-instrumentations-node/src/utils.ts	97.87% <0.00%> (ø)