Issue-#898: Fix invalid json ddo example

content/concepts/did-ddo.md

@@ -767,8 +767,7 @@ Example:
 		"author": "OPF",
 		"license": "https://market.oceanprotocol.com/terms"
 	},
-  "services": [
-    {
+	"services": [{
 			"id": "1",
 			"type": "access",
 			"files": "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",
@@ -777,13 +776,12 @@ Example:
 			"datatokenAddress": "0x123",
 			"serviceEndpoint": "https://myprovider.com",
 			"timeout": 0,
-      "consumerParameters": [
-        {
+			"consumerParameters": [{
 					"name": "surname",
 					"type": "text",
 					"label": "Name",
 					"required": true,
-          "default": "NoName"
+					"default": "NoName",
 					"description": "Please fill your name"
 				},
 				{
@@ -791,9 +789,10 @@ Example:
 					"type": "number",
 					"label": "Age",
 					"required": false,
-          "default": 0
+					"default": 0,
 					"description": "Please fill your age"
-      }]
+				}
+			]
 		},
 		{
 			"id": "2",
@@ -808,8 +807,7 @@ Example:
 				"allowRawAlgorithm": false,
 				"allowNetworkAccess": true,
 				"publisherTrustedAlgorithmPublishers": ["0x234", "0x235"],
-        "publisherTrustedAlgorithms": [
-          {
+				"publisherTrustedAlgorithms": [{
 						"did": "did:op:123",
 						"filesChecksum": "100",
 						"containerSectionChecksum": "200"
@@ -824,18 +822,14 @@ Example:
 		}
 	],
 	"credentials": {
-    "allow": [
-      {
+		"allow": [{
 			"type": "address",
 			"values": ["0x123", "0x456"]
-      }
-    ],
-    "deny": [
-      {
+		}],
+		"deny": [{
 			"type": "address",
 			"values": ["0x2222", "0x333"]
-      }
-    ]
+		}]
 	},
 
 	"nft": {
@@ -848,8 +842,7 @@ Example:
 		"tokenURI": "xxx"
 	},
 
-  "datatokens": [
-    {
+	"datatokens": [{
 			"address": "0x000000",
 			"name": "Datatoken 1",
 			"symbol": "DT-1",