docs(agents): fix small wording issue on parallel agents (#221)

Author: cwest

docs/agents/workflow-agents/parallel-agents.md

@@ -6,7 +6,7 @@ The `ParallelAgent` is a [workflow agent](index.md) that executes its sub-agents
 
 Use `ParallelAgent` when: For scenarios prioritizing speed and involving independent, resource-intensive tasks, a `ParallelAgent` facilitates efficient parallel execution. **When sub-agents operate without dependencies, their tasks can be performed concurrently**, significantly reducing overall processing time.
 
-As with other [workflow agents](index.md), the `ParallelAgent` is not powered by an LLM, and is thus deterministic in how it executes. That being said, workflow agents are only concerned only with their execution (i.e. in parallel), and not their internal logic; the tools or sub-agents of a workflow agent may or may not utilize LLMs.
+As with other [workflow agents](index.md), the `ParallelAgent` is not powered by an LLM, and is thus deterministic in how it executes. That being said, workflow agents are only concerned with their execution (i.e. executing sub-agents in parallel), and not their internal logic; the tools or sub-agents of a workflow agent may or may not utilize LLMs.
 
 ### Example