DOC-1090: Clean up some of the noisiest Vale errors and warnings

[freakwriter]

Tidied up some of the files with the noisiest Vale errors. Most changes are in the Embed Configuration page to remove excessive use of passive voice and add clarity to headers.

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[github-actions]

Overall readability score: 43.74 (🟢 +0)

File	Readability
data-types.md	77.69 (🟢 +0.71)
introduction.md	44.93 (🔴 -3.49)
understand-agents.md	65.5 (🟢 +0)
understand-chains.md	66.72 (🟢 +0)
understand-memory.md	51.39 (🟢 +0)
understand-tools.md	71.93 (🟢 +0)
configuration.md	75.6 (🔴 -0.01)
contentful.md	58.29 (🔴 -1.03)
formstacktrigger.md	49.99 (🟢 +2.16)
xero.md	54.11 (🔴 -2.64)

View detailed metrics

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

File	Readability	FRE	GF	ARI	CLI	DCRS
data-types.md	77.69	62.48	7.27	10.2	9.68	5.72
	🟢 +0.71	🟢 +0	🟢 +0	🟢 +0.1	🟢 +0.06	🟢 +0.15
introduction.md	44.93	28.09	8.23	14.9	16.9	8.34
	🔴 -3.49	🔴 -8.16	🟢 +0	🔴 -0.7	🔴 -0.57	🔴 -0.1
understand-agents.md	65.5	61.06	11.75	9.2	8.41	8.06
	🟢 +0	🟢 +0	🟢 +0	🟢 +0	🟢 +0	🟢 +0
understand-chains.md	66.72	56.15	9.8	9.6	10.14	7.53
	🟢 +0	🟢 +0	🟢 +0	🟢 +0	🟢 +0	🟢 +0
understand-memory.md	51.39	32.19	9.23	13	14.09	8.1
	🟢 +0	🟢 +0	🟢 +0	🟢 +0	🟢 +0	🟢 +0
understand-tools.md	71.93	65.22	8.82	9.1	9.21	7.53
	🟢 +0	🟢 +0	🟢 +0	🟢 +0	🟢 +0	🟢 +0
configuration.md	75.6	59.9	7.27	8.7	10.54	6.54
	🔴 -0.01	🟢 +0.1	🟢 +0.27	🔴 -0.1	🔴 -0.29	🟢 +0.02
contentful.md	58.29	35.74	7.52	12.9	14.42	6.95
	🔴 -1.03	🟢 +0.1	🔴 -0.01	🔴 -0.3	🔴 -0.35	🔴 -0.03
formstacktrigger.md	49.99	32.19	8.39	15.3	16.29	6.98
	🟢 +2.16	🟢 +1.52	🟢 +0.78	🟢 +0.4	🔴 -0.35	🟢 +0.15
xero.md	54.11	34.32	9.08	12.5	13.61	7.88
	🔴 -2.64	🔴 -7.95	🔴 -0.14	🔴 -0.3	🔴 -0.23	🔴 -0.1

Averages:

	Readability	FRE	GF	ARI	CLI	DCRS
Average	43.74	35.16	11.54	14.8	14.31	8.49
	🟢 +0	🔴 -0.01	🟢 +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

[freakwriter]

@ayatnkw or @nik8n can one of you rubberstamp this PR? The Vale error logs were getting really noisy so this was a first quick pass at removing some of the most obnoxious errors. Nothing major changed content-wise other than replacing some written-out things with contractions and removing some heavy passive voice usage.

[ayatnkw]

Looks good thank you!