Add the rest of the tag descriptions (#661)

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## Motivation and Context
<!-- Why is this change needed? What problem does it solve? -->

## How Has This Been Tested?
<!-- Have you tested this in a real application? Which scenarios were
tested? -->

## Breaking Changes
<!-- Will users need to update their code or configurations? -->

## Types of changes
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the boxes that apply: -->
- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] Documentation update

## Checklist
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that apply. -->
- [ ] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [ ] My code follows the repository's style guidelines
- [ ] New and existing tests pass locally
- [ ] I have added appropriate error handling
- [ ] I have added or updated documentation as needed

## Additional context
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Signed-off-by: Radoslav Dimitrov <[email protected]>

Author: rdimitrov

internal/api/router/router.go

@@ -149,6 +149,22 @@ func NewHumaAPI(cfg *config.Config, registry service.RegistryService, mux *http.
 			Name:        "publish",
 			Description: "Operations for publishing MCP servers to the registry",
 		},
+		{
+			Name:        "auth",
+			Description: "Authentication operations for obtaining tokens to publish servers",
+		},
+		{
+			Name:        "admin",
+			Description: "Administrative operations for managing servers (requires elevated permissions)",
+		},
+		{
+			Name:        "health",
+			Description: "Health check endpoint for monitoring service availability",
+		},
+		{
+			Name:        "ping",
+			Description: "Simple ping endpoint for testing connectivity",
+		},
 	}
 
 	// Add metrics middleware with options