Update Query Projects documentation

An array is returned instead of a map. This matches the text but the
example showed a map like List Projects.

Release-Notes: skip
Change-Id: If91c1753fd9b483d0ea11e199d54da9dacb4c8bf
diff --git a/Documentation/rest-api-projects.txt b/Documentation/rest-api-projects.txt
index ff35dde..cf3bf6961 100644
--- a/Documentation/rest-api-projects.txt
+++ b/Documentation/rest-api-projects.txt
@@ -402,12 +402,12 @@
   Content-Type: application/json; charset=UTF-8
 
   )]}'
-  {
-    "test": {
+  [
+    {
       "id": "test",
       "description": "\u003chtml\u003e is escaped"
     }
-  }
+  ]
 ----
 
 [[project-query-limit]]