remove trailing spaces in UI model for preview [skip ci]

Author: mojavelinux

preview-src/ui-model.yml

@@ -9,10 +9,10 @@ site:
     url: '#'
     versions:
     - &latest_version_abc
-      url: '#' 
+      url: '#'
       version: '1.1'
       displayVersion: '1.1'
-    - url: '#' 
+    - url: '#'
       version: '1.0'
       displayVersion: '1.0'
     latestVersion: *latest_version_abc
@@ -27,13 +27,13 @@ site:
       displayVersion: '6.0'
     - &component_version
       title: *component_title
-      url: '#' 
+      url: '#'
       version: '5.2'
       displayVersion: '5.2'
-    - url: '#' 
+    - url: '#'
       version: '5.1'
       displayVersion: '5.1'
-    - url: '#' 
+    - url: '#'
       version: '5.0'
       displayVersion: '5.0'
     latestVersion: *latest_version_xyz
@@ -42,13 +42,13 @@ site:
     url: '#'
     versions:
     - &latest_version_123
-      url: '#' 
+      url: '#'
       version: '2.2'
       displayVersion: '2.2'
-    - url: '#' 
+    - url: '#'
       version: '2.1'
       displayVersion: '2.1'
-    - url: '#' 
+    - url: '#'
       version: '2.0'
       displayVersion: '2.0'
     latestVersion: *latest_version_123