docs: [EIP-1193] Update Protocol Kit initialization

[germartinez]

Context

This PR:
Updates the initialization of the Protocol Kit after the EthAdapter class was removed.
safe-global/safe-core-sdk#770

TBD:

• Protocol Kit migration guides from v1 and v2 have not been updated yet.

[github-actions]

Overall readability score: 56.22 (🔴 -0.02)

File	Readability
delegates.mdx	14.71 (🔴 -1.59)
messages.mdx	8.48 (🟢 +1.68)
transactions.mdx	9.15 (🟢 +0.9)
api-kit.mdx	58.92 (🔴 -3.18)
safe-auth.mdx	51.13 (🔴 -0.98)
protocol-kit.mdx	68.24 (🔴 -2.39)
signatures.md	62.99 (🟢 +0.27)
messages.mdx	75.05 (🟢 +0)
transactions.mdx	45.04 (🟢 +0.08)
safe-factory.md	59.97 (🟢 +3.22)
safe.md	70.29 (🟢 +0.66)
4337-safe-sdk.mdx	32.31 (🟢 +0.45)
gelato-relay.mdx	66.67 (🟢 +0)
safe-4337-pack.mdx	60.43 (🟢 +0.01)

View detailed metrics

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

File	Readability	FRE	GF	ARI	CLI	DCRS
delegates.mdx	14.71	1.63	14.25	22	19	9.04
	🔴 -1.59	🟢 +1.63	🔴 -1.12	🟢 +0	🟢 +0	🟢 +0.02
messages.mdx	8.48	0	18.57	22	19	8.59
	🟢 +1.68	🟢 +0	🟢 +0.06	🟢 +0	🟢 +0	🟢 +0.49
transactions.mdx	9.15	0	18.8	22	19	8.26
	🟢 +0.9	🟢 +0	🔴 -0.17	🟢 +0	🟢 +0	🟢 +0.37
api-kit.mdx	58.92	45.56	10.96	11.6	11.48	7.3
	🔴 -3.18	🔴 -8.66	🔴 -0.12	🔴 -0.6	🔴 -0.52	🟢 +0.02
safe-auth.mdx	51.13	40.95	11.75	11.3	13.1	8.49
	🔴 -0.98	🔴 -0.41	🔴 -0.53	🟢 +0.2	🟢 +0.11	🔴 -0.14
protocol-kit.mdx	68.24	57.27	9.25	9.9	11.19	6.81
	🔴 -2.39	🔴 -0.6	🔴 -0.45	🔴 -0.5	🔴 -0.24	🔴 -0.14
signatures.md	62.99	55.64	9.88	11.9	12.35	6.61
	🟢 +0.27	🟢 +0.2	🟢 +0.04	🟢 +0.1	🟢 +0.06	🔴 -0.02
messages.mdx	75.05	64	8.29	9.8	10.15	6.05
	🟢 +0	🟢 +0	🟢 +0	🟢 +0	🟢 +0	🟢 +0
transactions.mdx	45.04	52.8	9.48	19.5	19	5.91
	🟢 +0.08	🟢 +0	🟢 +0.03	🟢 +0	🟢 +0	🟢 +0.01
safe-factory.md	59.97	55.13	10.94	11.3	11.6	7.56
	🟢 +3.22	🟢 +8.35	🟢 +0.1	🟢 +0.4	🟢 +0.52	🟢 +0.11
safe.md	70.29	42.48	7.13	10.4	12.46	5.76
	🟢 +0.66	🟢 +0	🟢 +0.02	🟢 +0.2	🟢 +0.17	🟢 +0.03
4337-safe-sdk.mdx	32.31	43.8	17.61	21.1	11.15	7.79
	🟢 +0.45	🟢 +0.3	🟢 +0.16	🟢 +0.1	🔴 -0.06	🟢 +0.02
gelato-relay.mdx	66.67	54.42	9.56	10.5	10.79	6.89
	🟢 +0	🟢 +0	🟢 +0	🟢 +0	🟢 +0	🟢 +0
safe-4337-pack.mdx	60.43	34.12	8.15	11.7	14.25	6.48
	🟢 +0.01	🔴 -0.1	🟢 +0.06	🟢 +0	🔴 -0.12	🟢 +0.03

Averages:

	Readability	FRE	GF	ARI	CLI	DCRS
Average	56.22	49	10.77	12.62	12.34	7.58
	🔴 -0.02	🟢 +0.01	🔴 -0.03	🟢 +0	🟢 +0	🟢 +0.01

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