fix(AWS EventBridge): Addres typos in error messages

[ankon]

This fixes a bunch of similar typos in error messages.

[codecov]

Codecov Report

Merging #10165 (2c63588) into master (39bdea0) will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #10165      +/-   ##
==========================================
+ Coverage   85.35%   85.36%   +0.01%     
==========================================
  Files         337      338       +1     
  Lines       13725    13813      +88     
==========================================
+ Hits        11715    11792      +77     
- Misses       2010     2021      +11     

Impacted Files	Coverage Δ
...ns/aws/package/compile/events/eventBridge/index.js	98.34% <ø> (ø)
bin/serverless.js	39.13% <0.00%> (-10.87%)	⬇️
lib/cli/triage.js	90.80% <0.00%> (ø)

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[pgrzesik]

Thank you @ankon - great catch 👏