Make remote_client reno readable

The items of remote_client methods were unreadable, so this patch
makes it readable.

Change-Id: I40688fe5e7151dde48c6be0124c2c621f02de585
Ref: https://docs.openstack.org/releasenotes/tempest/unreleased.html
diff --git a/releasenotes/notes/add-tempest-lib-remote-client-adbeb3f42a36910b.yaml b/releasenotes/notes/add-tempest-lib-remote-client-adbeb3f42a36910b.yaml
index c21751b..1b8cda2 100644
--- a/releasenotes/notes/add-tempest-lib-remote-client-adbeb3f42a36910b.yaml
+++ b/releasenotes/notes/add-tempest-lib-remote-client-adbeb3f42a36910b.yaml
@@ -1,10 +1,11 @@
 ---
 features:
-  - Add remote_client under tempest.lib.
+  - |
+    Add remote_client under tempest.lib.
     This remote_client under tempest.lib is defined as stable
     interface, and now this module provides the following
     essential methods.
 
-      * exec_command
-      * validate_authentication
-      * ping_host
+    - exec_command
+    - validate_authentication
+    - ping_host