Fix another batch of spelling typos

[NathanBaulch]

This PR fixes over a thousand spelling typos across the entire codebase, just like I did last year in #10272.
However this time I used the excellent typos tool to speed up the process. This could be set up as a GitHub action if desired, with a little work upfront to identify and configure the false positives.

FYI, the top 10 typos this time around are:

1. occured
2. someting
3. additonal
4. overrided
5. errror
6. seperate
7. propery
8. pharse
9. asserion
10. unambigously

PR checklist

• Read the contribution guidelines.
• Pull Request title clearly describes the work in the pull request and Pull Request description provides details about how to validate the work. Missing information here may result in delayed response from the community.
• Run the following to build the project and update samples:

  ./mvnw clean package 
  ./bin/generate-samples.sh
  ./bin/utils/export_docs_generators.sh
  

  Commit all changed files.
• File the PR against the correct branch: master (6.1.0) (minor release - breaking changes with fallbacks), 7.0.x (breaking changes without fallbacks)
• If your PR is targeting a particular programming language, @mention the technical committee members, so they are more likely to review the pull request.

[NathanBaulch]

Added some grammar corrections while I'm at it.

[wing328]

LGTM. Thanks for the PR.