[PATCH 2/4] doc: git: link to the gitdatamodel(7) tutorial

From: Kristoffer Haugsbakk <redacted>

The previous commit added the first mention of gitdatamodel(1) on
another page, namely in git(1). But there are also other places where
a mention is relevant.

Let’s mention it:

• under Description, since it as useful as the other tutorials already
  mentioned there for those who are interested;
• under Terminology, since it complements gitglossary(7) as a
  pedagogical rather than reference source for the core terms;[1] and
• under See Also, since the other tutorials (plus the user manual) are
  mentioned there.

We don’t need to mention it under Further Documentation since we now
mention it under Description.

† 1: See dee80940 (doc: add an explanation of Git's data model,
     2025-11-12):

          `gitglossary`. This makes a good effort, but it's an
          alphabetically ordered dictionary and a dictionary is not a
          good way to learn concepts. You have to jump around too much
          and it's not possible to present the concepts in the order
          that they should be explained.

Signed-off-by: Kristoffer Haugsbakk <redacted>
---

Notes (series):
    I have used double spacing for sentences since that seemed to what was
    already in use.

 Documentation/git.adoc | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/Documentation/git.adoc b/Documentation/git.adoc
index 8a5cdd3b3d2..6f0075f9188 100644
--- a/Documentation/git.adoc
+++ b/Documentation/git.adoc

@@ -25,7 +25,8 @@ and full access to internals.
 See linkgit:gittutorial[7] to get started, then see
 linkgit:giteveryday[7] for a useful minimum set of
 commands.  The link:user-manual.html[Git User's Manual] has a more
-in-depth introduction.
+in-depth introduction.  See linkgit:gitdatamodel[7] if you want to
+learn about the data model and important terminology.
 
 After you mastered the basic concepts, you can come back to this
 page to learn what commands Git offers.  You can learn more about

@@ -469,7 +470,9 @@ Higher level SCMs may provide and manage additional information in the
 
 Terminology
 -----------
-Please see linkgit:gitglossary[7].
+Please see linkgit:gitglossary[7].  See linkgit:gitdatamodel[7] for a
+discussion of the core data model, which includes important terminology
+used throughout the documentation.
 
 
 Environment Variables

@@ -1199,8 +1202,9 @@ SEE ALSO
 --------
 linkgit:gittutorial[7], linkgit:gittutorial-2[7],
 linkgit:giteveryday[7], linkgit:gitcvs-migration[7],
-linkgit:gitglossary[7], linkgit:gitcore-tutorial[7],
-linkgit:gitcli[7], link:user-manual.html[The Git User's Manual],
+linkgit:gitglossary[7], linkgit:gitdatamodel[7],
+linkgit:gitcore-tutorial[7], linkgit:gitcli[7],
+link:user-manual.html[The Git User's Manual],
 linkgit:gitworkflows[7]
 
 GIT

-- 
2.55.0.13.g85d2d65e389