What kind of change does this PR introduce?
Fixing some typos with some comments and in some methods and params.

What is the current behavior?
N/A

What is the new behavior?
Typos are fixed.

What might this PR break?
Nothing

Please check if the PR fulfills these requirements

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

Other information: