exportor -> exporter

[Kielek]

Fixes N/A

Changes

exportor -> exporter

[codecov]

Codecov Report

Merging #3678 (18a1861) into main (a6bdf63) will increase coverage by 0.02%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3678      +/-   ##
==========================================
+ Coverage   87.78%   87.81%   +0.02%     
==========================================
  Files         283      283              
  Lines       10286    10286              
==========================================
+ Hits         9030     9033       +3     
+ Misses       1256     1253       -3     

Impacted Files	Coverage Δ
...OpenTelemetry/Metrics/BaseExportingMetricReader.cs	90.76% <100.00%> (ø)
src/OpenTelemetry/ProviderExtensions.cs	81.81% <0.00%> (-9.10%)	⬇️
...Telemetry/Metrics/PeriodicExportingMetricReader.cs	72.72% <0.00%> (-5.46%)	⬇️
...Telemetry/Internal/SelfDiagnosticsEventListener.cs	97.65% <0.00%> (+0.78%)	⬆️
...metryProtocol/Implementation/ActivityExtensions.cs	96.15% <0.00%> (+1.09%)	⬆️
src/OpenTelemetry/BatchExportProcessor.cs	84.11% <0.00%> (+1.86%)	⬆️
src/OpenTelemetry/Logs/OpenTelemetryLogger.cs	88.88% <0.00%> (+2.22%)	⬆️
...emetry.Api/Internal/OpenTelemetryApiEventSource.cs	82.35% <0.00%> (+2.94%)	⬆️