Improve control node concept explanation (ansible#64356)

Signed-off-by: 林博仁(Buo-ren, Lin) <[email protected]>

+label: docsite_pr

docs/docsite/rst/shared_snippets/basic_concepts.txt

@@ -1,7 +1,7 @@
 Control node
 ============
 
-Any machine with Ansible installed. You can run commands and playbooks, invoking ``/usr/bin/ansible`` or ``/usr/bin/ansible-playbook``, from any control node. You can use any computer that has Python installed on it as a control node - laptops, shared desktops, and servers can all run Ansible. However, you cannot use a Windows machine as a control node. You can have multiple control nodes.
+Any machine with Ansible installed. You can run Ansible commands and playbooks by invoking the ``ansible`` or ``ansible-playbook`` command from any control node. You can use any computer that has a Python installation as a control node - laptops, shared desktops, and servers can all run Ansible. However, you cannot use a Windows machine as a control node. You can have multiple control nodes.
 
 Managed nodes
 =============