Fix reference to agent config

Author: jahooma

sdk/README.md

@@ -138,7 +138,7 @@ Runs a Codebuff agent with the specified options.
 
 #### Parameters
 
-- **`agent`** (string, required): The agent to run. Use `'base'` for the default agent, or specify a custom agent ID if you made your own agent config.
+- **`agent`** (string, required): The agent to run. Use `'base'` for the default agent, or specify a custom agent ID if you made your own agent definition (passed with the `agentDefinitions` param).
 
 - **`prompt`** (string, required): The user prompt describing what you want the agent to do.
 
@@ -152,7 +152,7 @@ Runs a Codebuff agent with the specified options.
 
 - **`knowledgeFiles`** (object, optional): Knowledge files to inject into every `run()` call. Uses the same schema as `projectFiles` - keys are file paths and values are file contents. These files are added directly to the agent's context.
 
-- **`agentDefinitions`** (array, optional): Array of custom agent configurations. Each object should satisfy the AgentConfig type.
+- **`agentDefinitions`** (array, optional): Array of custom agent definitions. Each object should satisfy the AgentDefinition type.
 
 - **`customToolDefinitions`** (array, optional): Array of custom tool definitions that extend the agent's capabilities. Each tool definition includes a name, Zod schema for input validation, and a handler function. These tools can be called by the agent during execution.