NODE-1256: Docs for Webhook Node: Overhaul

[freakwriter]

Updated docs for node overhaul:

• Reordered parameters to match current node layout.
• Added JWT Auth and IP(s) Whitelist options.
• Ensure table is updated, accurate, and matches order in GUI.
• Add cross-reference link to other node types.

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[github-actions]

Overall readability score: 41.07 (🟢 +0)

File	Readability
n8n-nodes-base.webhook.md	78.53 (🟢 +2.43)

View detailed metrics

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

File	Readability	FRE	GF	ARI	CLI	DCRS
n8n-nodes-base.webhook.md	78.53	58.89	6.8	8.7	9.96	6.08
	🟢 +2.43	🟢 +0.91	🟢 +0.49	🟢 +0.5	🟢 +0.12	🟢 +0.17

Averages:

	Readability	FRE	GF	ARI	CLI	DCRS
Average	41.07	33.65	12.03	15.36	14.45	8.67
	🟢 +0	🟢 +0	🟢 +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