Improve start of sentence

Co-authored-by: Ben Straub <[email protected]>

Author: HonkingGoose

book/05-distributed-git/sections/contributing.asc

@@ -787,7 +787,7 @@ Result: OK
 
 ==== Summary
 
-We covered multiple workflows, and talked about the differences between working as part of a small team on closed-source projects vs contributing to a big public project.
+In this section, we covered multiple workflows, and talked about the differences between working as part of a small team on closed-source projects vs contributing to a big public project.
 You know to check for white-space errors before committing, and can write a great commit message.
 You learned how to format patches, and e-mail them to a developer mailing list.
 Dealing with merges was also covered in the context of the different workflows.