adapt README

Signed-off-by: Justin Dex <justin.dex@msg-david.de>

README.md

@@ -41,16 +41,18 @@ b)	Uploading your own SHACL- Schemata
 #### Upload shape Page
 
 ![screenshot3.png](./documentation/screenshots/Picture3.png)
-7) Click on Choose File to select your own schema
+7.1) Click on Choose File to select your own schema
 
-8) Your selected file name should appear above the button, afterwards click the upload button
+7.2) Click on Choose File to select your own claim file matching the schema to prefill the formfields (optional)
+
+8) Your selected file names should appear above the button, afterwards click the upload button
 
 #### Complete Form Page
 ![screenshot4.png](./documentation/screenshots/Picture4.png)
 
-The language can also be changed from this page
+9) The language can also be changed from this page
 
-10)  Fill out the fields (Required fields are demonstrated with an *)
+10) Fill out the fields (Required fields are demonstrated with an *)
 
 11) Save/Export the generated Self-Description
 
@@ -107,6 +109,40 @@ ex:DatasetShape
     ] ;
 	.
 ```
+Example claim file for uploading:
+```
+{
+  "@context": {
+    "xsd": "http://www.w3.org/2001/XMLSchema#",
+    "ex": "http://example.com/ns#",
+    "dct": "http://purl.org/dc/terms/",
+    "dcat": "http://www.w3.org/ns/dcat#",
+    "sh": "http://www.w3.org/ns/shacl#"
+  },
+  "@id": "did:example:1234",
+  "@type": "dcat:Dataset",
+  "dct:title": {
+    "@value": "Example",
+    "@type": "xsd:string"
+  },
+  "dct:description": {
+    "@value": "Example",
+    "@type": "xsd:string"
+  },
+  "dcat:startDate": {
+    "@value": "2024-07-17T12:51:32",
+    "@type": "xsd:dateTime"
+  },
+  "dcat:endDate": {
+    "@value": "2024-07-18T12:51:34",
+    "@type": "xsd:dateTime"
+  },
+  "dcat:keyword": {
+    "@value": "Example",
+    "@type": "xsd:string"
+  }
+}
+```
 Exported TTL:
 ```
 @prefix xsd: <http://www.w3.org/2001/XMLSchema#>.