List other plugins in alphabetical order in checkers.yaml

Change-Id: I23b412fb0fa093e61ff0e36ec8bc25a77f46e51c
diff --git a/checkers.yaml b/checkers.yaml
index 4747ec0..14d4865 100644
--- a/checkers.yaml
+++ b/checkers.yaml
@@ -91,13 +91,13 @@
 
 # Other plugins:
 
-  - uuid: "zuul-check:plugins_oauth"
-    repository: "plugins/oauth"
+  - uuid: "zuul-check:plugins_code-owners"
+    repository: "plugins/code-owners"
     name: "Zuul Check Pipeline"
     description: "Run Zuul jobs on new patchsets"
 
-  - uuid: "zuul-check:plugins_code-owners"
-    repository: "plugins/code-owners"
+  - uuid: "zuul-check:plugins_oauth"
+    repository: "plugins/oauth"
     name: "Zuul Check Pipeline"
     description: "Run Zuul jobs on new patchsets"