Fix some typo in kafkareceiver and kafkaexporter package

[hanjm]

Description:
Fix some typo in kafkareceiver and kafkaexporter package

[codecov]

Codecov Report

Merging #2955 (2857652) into main (90b2dec) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #2955   +/-   ##
=======================================
  Coverage   91.58%   91.58%           
=======================================
  Files         312      312           
  Lines       15351    15351           
=======================================
  Hits        14059    14059           
  Misses        883      883           
  Partials      409      409           

Impacted Files	Coverage Δ
receiver/kafkareceiver/factory.go	100.00% <ø> (ø)

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[hanjm]

Hello, I am using kafka exporter and receiver, then find some logic problem( issue #2956 fixed by #2957 ) and typo problem. simply first, i fix some typo.

service:
  pipelines:
    traces/producer:
      receivers: [otlp, opencensus, jaeger, zipkin]
      exporters: [kafka]
    traces/consumer:
      receivers: [kafka]
      processors: [batch]
      exporters: [logging]