doc: Format example JSON data better

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index cc3041f63731b540a76ef3c411a4c52b88fb9693..5b2c87705ef950e9e2a320df48bb278554f3e4c5 100644 (file)
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -12916,17 +12916,20 @@ table2-mapping
    For example, suppose you have some JSON data from a GPS tracker that you
    would like to parse, such as:
 <programlisting>
-{ "track" :
-  {
-    "segments" : [ 
-      { "location":   [ 47.763, 13.4034 ],
+{
+  "track": {
+    "segments": [
+      {
+        "location":   [ 47.763, 13.4034 ],
         "start time": "2018-10-14 10:05:14",
         "HR": 73
       },
-      { "location":   [ 47.706, 13.2635 ],
+      {
+        "location":   [ 47.706, 13.2635 ],
         "start time": "2018-10-14 10:39:21",
         "HR": 135
-      } ]
+      }
+    ]
   }
 }
 </programlisting>