Update usage.md with current CLI output (!9156) · Merge requests · OpenAPI Tools / openapi-generator

Merged Administrator requested to merge github/fork/Marcono1234/patch-1 into master Apr 01, 2021

Created by: Marcono1234

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. This is important, as CI jobs will verify all generator outputs of your HEAD commit as it would merge with master. These must match the expectations made by your contribution. You may regenerate an individual generator by passing the relevant config(s) as an argument to the script, for example ./bin/generate-samples.sh bin/configs/java*. For Windows users, please run the script in Git BASH.
File the PR against the correct branch: master, 5.1.x, 6.0.x
If your PR is targeting a particular programming language, @mention the technical committee members, so they are more likely to review the pull request.

Update usage.md (and therefore hopefully the website as well) with the current output of the CLI; it looks like this was forgotten when new features were added in the past
Change syntax highlighting for CLI output in usage.md from bash to text; most of it is plain text and using bash syntax hightlighting is pretty confusing. Example: