user-manual: quick-start updates

Update text to reflect new position in appendix.

Update the name to reflect the fact that this is closer to reference
than tutorial documentation (as suggested by Jonas Fonseca).

Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>

Documentation/user-manual.txt

@@ -27,7 +27,7 @@ $ man git-clone
 See also <<git-quick-start>> for a brief overview of git commands,
 without any explanation.
 
-Also, see <<todo>> for ways that you can help make this manual more
+Finally, see <<todo>> for ways that you can help make this manual more
 complete.
 
 
@@ -3669,11 +3669,11 @@ itself!
 include::glossary.txt[]
 
 [[git-quick-start]]
-Appendix A: Git Quick Start
-===========================
+Appendix A: Git Quick Reference
+===============================
 
-This is a quick summary of the major commands; the following chapters
-will explain how these work in more detail.
+This is a quick summary of the major commands; the previous chapters
+explain how these work in more detail.
 
 [[quick-creating-a-new-repository]]
 Creating a new repository