Update README.md + fix DOCS.md typo

[bhavnicksm]

This pull request includes several updates to the documentation in DOCS.md and README.md files to improve readability and consistency. The changes primarily focus on capitalization and formatting adjustments.

Documentation Improvements:

• Updated section titles and table of contents entries to use consistent capitalization in DOCS.md. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12]
• Added a missing newline after the installation header in README.md.
• Corrected the formatting of list items under "Size" and "Speed" sections in README.md.