Improving Readability of the entire Codebase

Hello,
    While reading the source codes of Git, i found something. Some
sentences and words are not in their correct cases. For example like
starting a sentence with a lower case whereas it should be in upper
case. I want to go through the entire code base and correct the cases
of these letters to improve on readability. I will also use this
opportunity to learn the source codes and familiarize myself with the
code base. If its a nice idea, someone should please give me the go
ahead. I will be waiting.

Regards Alangi Derick Ndimnain