Documentation: fix links to tutorials and other new manual pages

With the conversion of HTML documentation to man pages

tutorial.html -> gittutorial (7)
tutorial-2.html -> gittutorial-2 (7)
cvs-migration.html -> gitcvs-migration (7)
diffcore.html -> gitdiffcore (7)
repository-layout.html -> gitrepository-layout (5)
hooks.html -> githooks (5)
glossary.html -> gitglossary (7)
core-tutorial.html -> gitcore-tutorial (7)

and the automatic update of references to these pages,
a little debris was left behind. We clear it away.

Signed-off-by: Jonathan Nieder <jrnieder@uchicago.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/Documentation/gitcore-tutorial.txt b/Documentation/gitcore-tutorial.txt
index cb4ec40..6bb32a8 100644
--- a/Documentation/gitcore-tutorial.txt
+++ b/Documentation/gitcore-tutorial.txt
@@ -16,8 +16,8 @@
 work with a git repository.
 
 If you just need to use git as a revision control system you may prefer
-to start with linkgit:gittutorial[7][a tutorial introduction to git] or
-link:user-manual.html[the git user manual].
+to start with "A Tutorial Introduction to GIT" (linkgit:gittutorial[7]) or
+link:user-manual.html[the GIT User Manual].
 
 However, an understanding of these low-level tools can be helpful if
 you want to understand git's internals.
@@ -108,8 +108,7 @@
 populating your tree.
 
 [NOTE]
-An advanced user may want to take a look at the
-linkgit:gitrepository-layout[5][repository layout] document
+An advanced user may want to take a look at linkgit:gitrepository-layout[5]
 after finishing this tutorial.
 
 You have now created your first git repository. Of course, since it's
@@ -1589,7 +1588,7 @@
 have to worry. git supports "shared public repository" style of
 cooperation you are probably more familiar with as well.
 
-See linkgit:gitcvs-migration[7][git for CVS users] for the details.
+See linkgit:gitcvs-migration[7] for the details.
 
 Bundling your work together
 ---------------------------