Update prompts in README.

README.rst

@@ -85,7 +85,7 @@ API Endpoints Examples
          "Microsoft is located in Redmond, Washington."
        ],
        "entities": ["organization", "person", "location"],
-       "prompt": "Identify organizations, people, and places from the text.",
+       "prompt": "Identify organizations, people, and places from the text:\n",
        "threshold": 0.5
      }'
 
@@ -155,7 +155,7 @@ API Endpoints Examples
          "Bill Gates leads Microsoft."
        ],
        "relations": ["founded_by", "leads"],
-       "prompt": "Extract the relationships between the entities.",
+       "prompt": "Extract the relationships between the entities:\n",
        "threshold": 0.5
      }'
 
@@ -222,7 +222,7 @@ API Endpoints Examples
      -H "Content-Type: application/json" \
      -d '{
        "text": "Artificial intelligence is transforming industries worldwide. Machine learning enables computers to learn from data. Deep learning uses neural networks for complex tasks.",
-       "prompt": "Generate a concise summary of the key concepts.",
+       "prompt": "Generate a concise summary of the key concepts:\n",
        "threshold": 0.5
      }'