Document improvement: Fix spelling mistake errors #3323
Description
What broke? What's expected?
Current book-v3 documentation has some spelling errors.
Need to improve given documentation typo mistakes.
1] 6.4. Testing your own plugins
https://book.kubebuilder.io/plugins/testing-plugins.html
Simiply --> Simply
dimenstion --> dimension
Cleanup environment --> Clean up the environment
2] 6.1.3.1. kustomize/v1
https://book.kubebuilder.io/plugins/kustomize-v1.html
laguage --> language
3] 6.1.3.2. kustomize/v2-alpha
https://book.kubebuilder.io/plugins/kustomize-v2-alpha.html
plataform -> platform
4] 4.2.1. go/v3 vs go/v4-alpha
https://book.kubebuilder.io/migration/v3vsv4.html
customise --> customize
5] 3. Tutorial: Component Config
https://book.kubebuilder.io/component-config-tutorial/tutorial.html
with the a component --> with the component
6] 3.1. Changing things up
https://book.kubebuilder.io/component-config-tutorial/api-changes.html
exising project --> existing project
7] 3.3.1. Adding a new Config Type
https://book.kubebuilder.io/component-config-tutorial/config-type.html
explicity --> explicitly
Reproducing this issue
We can check spelling errors in current documentation
https://book.kubebuilder.io/
KubeBuilder (CLI) Version
3.9.1
PROJECT version
No response
Plugin versions
No response
Other versions
No response
Extra Labels
/kind documentation