fix(examples): fixed spelling and formatting mistakes at examples folder

[dalprahcd]

Brief

Thanks very much to all the maintainers for this awesome library. I thought about ways I could contribute to it, so I went through the examples folder and fixed the formatting and spelling mistakes.

Even though a lot of files were changed, I assume they are only formatting changes and should not affect any logic whatsoever.

Summary

• Trimmed trailing whitespace.
• Added final new line.
• fixed spelling mistakes when possible.

[runger1101001]

Dear Hudson,

Firstly, thank you for the PR, and your efforts in fixing our examples.

It will take me a little bit to look over it all, you changed 82 files :-)

[dalprahcd]

Dear @runger1101001, don't worry, grab a tea or a coffee (maybe a beer?) and take your time.