Update templates API endpoints and document missing parameters

[imchairmanm]

No description provided.

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[github-actions]

Overall readability score: 44.74 (🟢 +0.02)

File	Readability
custom-templates-library.md	49.9 (🟢 +25.8)

View detailed metrics

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

File	Readability	FRE	GF	ARI	CLI	DCRS
custom-templates-library.md	49.9	32.9	7.35	15.5	16.17	7.56
	🟢 +25.8	🟢 +27.71	🟢 +2.7	🟢 +6.5	🟢 +2.83	🟢 +0.98

Averages:

	Readability	FRE	GF	ARI	CLI	DCRS
Average	44.74	36.09	11.54	14.53	14.22	8.39
	🟢 +0.02	🟢 +0.02	🟢 +0	🟢 +0.01	🟢 +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

[netroy]

Thanks 🎉

[netroy]

Looks good.
The schemas are for individual items in the response object, but if someone complains, we can document the response objects as well then.