Update steps for 'Getting the source code' and link 'Git Bootcamp' (#986)

* Update steps for 'Getting the source code' and link 'Git Bootcamp'

* Removed .DS_Store

* Removed .github/.DS_Store

* Added new line in .gitignore

* Make long lines shorter

Co-authored-by: Ezio Melotti <ezio.melotti@gmail.com>

Author: abdnafees

getting-started/git-boot-camp.rst

@@ -61,6 +61,9 @@ You can also use SSH-based or HTTPS-based URLs.
 Configure the Remotes
 ---------------------
 
+.. These steps are duplicated in setup-building in step 6 and 7.
+   Please update these there as well.
+
 Configure ``git`` to pull ``main`` from the ``upstream`` remote::
 
    git config --local branch.main.remote upstream

getting-started/setup-building.rst

@@ -76,21 +76,18 @@ You will only need to execute these steps once per machine:
 
    (You can use both SSH-based or HTTPS-based URLs.)
 
-6. Configure an ``upstream`` remote::
+.. Step 6 and 7 are are duplicated in bootcamp as well.
+   Please update these steps in both places.
+
+6. Add an ``upstream`` remote, then configure ``git``
+   to pull ``main`` from ``upstream`` and always push to ``origin``::
 
       $ cd cpython
       $ git remote add upstream https://github.com/python/cpython
-
-7. Configure ``git`` to pull ``main`` from the ``upstream`` remote::
-
       $ git config --local branch.main.remote upstream
-
-8. Since one should never attempt to push to ``upstream``, configure
-   ``git`` to push always to ``origin``::
-
       $ git remote set-url --push upstream git@github.com:<your-username>/cpython.git
 
-9. Verify that your setup is correct::
+7. Verify that your setup is correct::
 
       $ git remote -v
       origin  git@github.com:<your-username>/cpython.git (fetch)
@@ -100,6 +97,9 @@ You will only need to execute these steps once per machine:
       $ git config branch.main.remote
       upstream
 
+For more information about these commands see
+:ref:`Git Bootcamp and Cheat Sheat <git-boot-camp>`.
+
 If you did everything correctly, you should now have a copy of the code
 in the ``cpython`` directory and two remotes that refer to your own GitHub fork
 (``origin``) and the official CPython repository (``upstream``).