refactor: ♻️ update post-copy message (#154)

# Description

This PR updates the post-copy message. Moved from #140 .

This PR needs a quick review.

## Checklist

- [x] Added or updated tests
- [x] Updated documentation
- [x] Ran `just run-all`

Author: martonvago

copier.yaml

@@ -11,21 +11,29 @@ _message_after_copy: |
 
   Your project "{{ github_repo }}" has been created successfully!
 
-  Next steps:
+  See the [guide](https://template-python-package.seedcase-project.org/docs/guide) for more detail
+  on the next steps. Briefly:
 
   1. Change directory to the project root:
 
-    $ cd {{ _copier_conf.dst_path }}
+    ``` bash
+    cd {{ _copier_conf.dst_path | realpath }}
+    ```
 
-  2. Install the pre-commit hooks:
+  2. Install the pre-commit hooks, add (called "update" here) the Quarto extension,
+     and build the README:
 
-    $ just install-precommit
+    ``` bash
+    just install-precommit update-quarto-theme build-readme
+    ```
 
-  3. Install [`spaid`](https://github.com/seedcase-project/spaid) and run these commands to upload and configure your project on GitHub:
+  3. Install [`spaid`](https://github.com/seedcase-project/spaid) and run these setup steps:
 
-    $ spaid_gh_create_repo_from_local -h
-    $ spaid_gh_set_repo_settings -h
-    $ spaid_gh_ruleset_basic_protect_main -h
+    ``` bash
+    spaid_gh_create_repo_from_local -h
+    spaid_gh_set_repo_settings -h
+    spaid_gh_ruleset_basic_protect_main -h
+    ```
 
   4. Configure GitHub following this
     [guide](https://guidebook.seedcase-project.org/operations/security#using-github-apps-to-generate-tokens):
@@ -37,7 +45,9 @@ _message_after_copy: |
 
   5. List and complete all TODO items in the repository:
 
-    $ just list-todos
+    ``` bash
+    just list-todos
+    ```
 
 # Questions:
 is_seedcase_project: