Fix subworkflow text

[evilnick]

trafficstars

So far:

• removed out of date text on parameters no longer implemented

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[github-actions[bot]]

Overall readability score: 44.72 (🟢 +0.01)

File	Readability
n8n-nodes-langchain.toolworkflow.md	31.05 (🟢 +1.53)

View detailed metrics

🟢 - Shows an increase in readability 🔴 - Shows a decrease in readability

File	Readability	FRE	GF	ARI	CLI	DCRS
n8n-nodes-langchain.toolworkflow.md	31.05	25.25	9.54	19.8	19	8.68
	🟢 +1.53	🟢 +3.04	🟢 +0.4	🟢 +0.5	🟢 +0	🔴 -0.12

Averages:

	Readability	FRE	GF	ARI	CLI	DCRS
Average	44.72	36.08	11.54	14.54	14.22	8.39
	🟢 +0.01	🟢 +0.02	🟢 +0	🟢 +0	🟢 +0	🟢 +0

View metric targets

Metric	Range	Ideal score
Flesch Reading Ease	100 (very easy read) to 0 (extremely difficult read)	60
Gunning Fog	6 (very easy read) to 17 (extremely difficult read)	8 or less
Auto. Read. Index	6 (very easy read) to 14 (extremely difficult read)	8 or less
Coleman Liau Index	6 (very easy read) to 17 (extremely difficult read)	8 or less
Dale-Chall Readability	4.9 (very easy read) to 9.9 (extremely difficult read)	6.9 or less

[imchairmanm]

Closing, as this work is incorporated in #3051