Update installing_collections_file.rst (#77439)

docs/docsite/rst/shared_snippets/installing_collections_file.rst

@@ -16,9 +16,9 @@ Ansible can also install a collection collected with ``ansible-galaxy collection
 .. code-block:: yaml
 
     collections:
-      - source: /tmp/my_namespace-my_collection-1.0.0.tar.gz
+      - name: /tmp/my_namespace-my_collection-1.0.0.tar.gz
         type: file
 
 .. note::
 
-    Relative paths are calculated from the current working directory (where you are invoking ``ansible-galaxy install -r`` from). They are not taken relative to the ``requirements.yml`` file.
+    Relative paths are calculated from the current working directory (where you are invoking ``ansible-galaxy install -r`` from). They are not taken relative to the ``requirements.yml`` file.