Fix dataset URL casing in loading example and citation

README.md

@@ -38,7 +38,7 @@ The catalogue is the underlying dataset for PolicyLayer's research report,
 ```python
 from datasets import load_dataset
 
-ds = load_dataset("policylayer/mcp-server-catalogue")
+ds = load_dataset("PolicyLayer/mcp-server-catalogue")
 servers = ds["servers"]
 tools   = ds["tools"]
 
@@ -128,7 +128,7 @@ For the dataset itself:
 
 ```
 PolicyLayer. (2026). PolicyLayer MCP Server Catalogue [Data set].
-Hugging Face. https://huggingface.co/datasets/policylayer/mcp-server-catalogue
+Hugging Face. https://huggingface.co/datasets/PolicyLayer/mcp-server-catalogue
 ```
 
 ---