Replace num_iters with num_instructions_to_generate

As per instructlab/sdg#77

Signed-off-by: Mark McLoughlin <[email protected]>

Author: markmc

docs/sdg/sdg-flow-yaml.md

@@ -73,7 +73,7 @@ The following parameters are supplied to a Flow constructor and used by the rend
 - client - an OpenAI completions API client for talking to the teacher model via the serving backend (i.e. llama-cpp or vLLM)
 - model_family - e.g. mixtral or merlinite
 - model_id - a path name for the specific teacher model being used
-- num_iters - how many samples to generate
+- num_instructions_to_generate - how many samples to generate
 - batched - whether the model serving backend supports batched mode
 
 For now, we assume that the `Block` classes know how to use these parameters and there is no need to use any sort of templating in the custom flows that could use these parameters.