feature #4377 Added interlinking and fixed install template for reusable bundles (WouterJ)

This PR was merged into the 2.3 branch.

Discussion
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Added interlinking and fixed install template for reusable bundles

| Q   | A
| --- | ---
| Doc fix? | yes
| New docs? | no
| Applies to | all
| Fixet tickets | -

See commit descriptions for more info

Commits
-------

35d8e5f Reverted removal of version
94f04a4 Added interlinking between the 2 best practices

Author: weaverryan

cookbook/bundles/best_practices.rst

@@ -15,6 +15,11 @@ apply to application bundles because you'll want to keep those as simple
 as possible. For application bundles, just follow the practices shown throughout
 the book and cookbook.
 
+.. seealso::
+
+    The best practices for application-specific bundles are discussed in
+    :doc:`/best_practices/introduction`.
+
 .. index::
    pair: Bundle; Naming conventions
 
@@ -219,7 +224,7 @@ following standardized instructions in your ``README.md`` file.
     following command to download the latest stable version of this bundle:
 
     ```bash
-    $ composer require <package-name>
+    $ composer require <package-name> "~1"
     ```
 
     This command requires you to have Composer installed globally, as explained
@@ -254,6 +259,9 @@ following standardized instructions in your ``README.md`` file.
     }
     ```
 
+This template assumes that your bundle is in its ``1.x`` version. If not, change
+the ``"~1"`` installation version accordingly (``"~2"``, ``"~3"``, etc.)
+
 Optionally, you can add more installation steps (*Step 3*, *Step 4*, etc.) to
 explain other required installation tasks, such as registering routes or
 dumping assets.