Add count to server response and fix Makefile paths

[sridharavinash]

Enhance the server response by including a count of registries and correct the paths used in the Makefile for running commands.

{
  "servers": [
    {
      "id": "77294190-5004-42d8-ba14-5a98277e522c",
      "name": "orangepurple/mcp-server",
      "description": "Another dummy MCP registry for testing",
      "repository": {
        "url": "https://github.com/example/mcp-2",
        "subfolder": "mcp",
        "branch": "develop",
        "commit": "def456ghi789"
      },
      "version": "2.1.0"
    },
    {
      "id": "c849e09c-4080-4fc8-8595-97de371cf645",
      "name": "greenyellow/mcp-server",
      "description": "Yet another dummy MCP registry for testing",
      "repository": {
        "url": "https://github.com/example/mcp-3",
        "branch": "feature/mcp-server",
        "commit": "789jkl012mno"
      },
      "version": "0.9.5"
    },
    {
      "id": "d1a0527d-70e4-4e7f-96ca-ca5f4ba80cc0",
      "name": "bluegreen/mcp-server",
      "description": "A dummy MCP registry for testing",
      "repository": {
        "url": "https://github.com/example/mcp-1",
        "subfolder": "server",
        "branch": "main",
        "commit": "abc123def456"
      },
      "version": "1.0.0"
    }
  ],
  "metadata": {
      "count": 3
   }
}