[DOCS] errors in RPC and typos in docs

[intls]

Brief Description of the Docs Request

While reviewing the project’s documentation, I came across a significant number of grammatical errors, spelling mistakes, and typos. These issues can confuse both users and developers when trying to understand the documentation. Correcting them will improve readability and clarity.

Poor grammar and typos reduce the professional appearance of the documentation and might cause misunderstandings for new users. Fixing these issues is essential to maintain the high quality of the project.

Links to Related Pages

rollup.mdx
genesis.mdx
bridged-usdc-standard.mdx

Additional Context

Provide any additional context about this documentation request. What problems did you run into that caused you to make this request?
Which existing documentation pages did you already try as a solution to your problem? Why do you think the requested page(s) will be beneficial to developers in the Optimism Collective?