Describe the bug
docs: improve repetitive wording in readme intro

To Reproduce

1. Open the relevant page/file.
2. Observe the current wording/content.
3. Compare with expected wording/content.

Expected behavior
The content should be clear and non-repetitive.

Screenshots
N/A

Desktop (please complete the following information):

• OS: macOS
• Browser: N/A
• Version: N/A

Smartphone (please complete the following information):

• Device: N/A
• OS: N/A
• Browser: N/A
• Version: N/A

Additional context
N/A