docs: rename plantype references to plan_type (#456)

Co-authored-by: Valeriy_Pavlovich <vp@strato.space>

Author: iqdoctor

README.md

@@ -297,7 +297,7 @@ Look at the `router.py` workflow for an example.
 
 ### Orchestrator
 
-Given a complex task, the Orchestrator uses an LLM to generate a plan to divide the task amongst the available Agents. The planning and aggregation prompts are generated by the Orchestrator, which benefits from using more capable models. Plans can either be built once at the beginning (`plantype="full"`) or iteratively (`plantype="iterative"`).
+Given a complex task, the Orchestrator uses an LLM to generate a plan to divide the task amongst the available Agents. The planning and aggregation prompts are generated by the Orchestrator, which benefits from using more capable models. Plans can either be built once at the beginning (`plan_type="full"`) or iteratively (`plan_type="iterative"`).
 
 ```python
 @fast.orchestrator(