where to find last modif date? (#1623)

* where to find last modif date?

* taking an example of an ontology with a last modification date

* prefered way to get the last modification date

Co-authored-by: Benjamin Geer <benjaminlewis.geer@unibas.ch>

docs/src/paradox/03-apis/api-v2/ontology-information.md

@@ -91,6 +91,14 @@ The response is in the complex API v2 schema. Sample response:
       "@id" : "http://www.knora.org/ontology/knora-base#SystemProject"
     },
     "rdfs:label" : "The standoff ontology"
+  }, {
+    "@id": "http://knora.unil.ch/ontology/0001/anything/v2",
+    "@type": "owl:Ontology",
+    "knora-api:attachedToProject": {
+      "@id": "http://rdfh.ch/projects/0001"
+    },
+    "knora-api:lastModificationDate": "2017-12-19T15:23:42.166Z",
+    "rdfs:label": "The anything ontology"
   } ],
   "@context" : {
     "knora-api" : "http://api.knora.org/ontology/knora-api/v2#",
@@ -109,17 +117,18 @@ HTTP GET to http://host/v2/ontologies/metadata/PROJECT_IRI[/PROJECT_IRI...]
 
 The project IRIs must be URL-encoded.
 
-Example response for the `images` test project
-(project IRI `http://rdfh.ch/projects/00FF`):
+Example response for the `anything` test project
+(project IRI `http://rdfh.ch/projects/0001`):
 
 ```jsonld
 {
-  "@id" : "http://0.0.0.0:3333/ontology/00FF/images/v2",
+  "@id" : "http://0.0.0.0:3333/ontology/0001/anything/v2",
   "@type" : "owl:Ontology",
   "knora-api:attachedToProject" : {
-    "@id" : "http://rdfh.ch/projects/00FF"
+    "@id" : "http://rdfh.ch/projects/0001"
   },
-  "rdfs:label" : "The images demo ontology",
+  "knora-api:lastModificationDate": "2017-12-19T15:23:42.166Z",
+  "rdfs:label" : "The anything ontology",
   "@context" : {
     "knora-api" : "http://api.knora.org/ontology/knora-api/v2#",
     "rdfs" : "http://www.w3.org/2000/01/rdf-schema#",
@@ -906,7 +915,8 @@ order:
 
 When changing an existing ontology, the client must always supply the
 ontology's `knora-api:lastModificationDate`, which is returned in the
-response to each update. If user A attempts to update an ontology, but
+response to each update or when [querying the ontology](#querying-an-ontology).
+If user A attempts to update an ontology, but
 user B has already updated it since the last time user A received the
 ontology's `knora-api:lastModificationDate`, user A's update will be
 rejected with an HTTP 409 Conflict error. This means that it is possible