chore: Update custom transport migration docs

[AbhiPrasad]

As per feedback in #7112, just forward along all of the options as it reduces user need to understand what they do.

[github-actions]

Replay SDK metrics 🚀

		Plain	+Sentry			+Replay
	Revision	Value	Value	Diff	Ratio	Value	Diff	Ratio
LCP	This PR 17c3132	71.86 ms	95.19 ms	+23.33 ms	+32.47 %	129.97 ms	+58.11 ms	+80.88 %
	Previous 274f489	69.12 ms	96.76 ms	+27.64 ms	+39.98 %	132.72 ms	+63.60 ms	+92.01 %
CLS	This PR 17c3132	0.06 ms	0.06 ms	-0.00 ms	-0.00 %	0.06 ms	+0.00 ms	+0.06 %
	Previous 274f489	0.06 ms	0.06 ms	-0.00 ms	-0.39 %	0.06 ms	-0.00 ms	-0.62 %
CPU	This PR 17c3132	17.13 %	16.89 %	-0.25 pp	-1.44 %	29.76 %	+12.63 pp	+73.72 %
	Previous 274f489	13.38 %	13.55 %	+0.17 pp	+1.25 %	24.94 %	+11.56 pp	+86.44 %
JS heap avg	This PR 17c3132	1.94 MB	1.99 MB	+51.48 kB	+2.65 %	3.02 MB	+1.08 MB	+55.36 %
	Previous 274f489	1.94 MB	2 MB	+53.31 kB	+2.74 %	3.02 MB	+1.08 MB	+55.57 %
JS heap max	This PR 17c3132	2.3 MB	2.57 MB	+267.54 kB	+11.63 %	4.51 MB	+2.2 MB	+95.81 %
	Previous 274f489	2.3 MB	2.55 MB	+248.56 kB	+10.79 %	4.5 MB	+2.2 MB	+95.46 %
netTx	This PR 17c3132	0 B	0 B	0 B	n/a	2.58 kB	+2.58 kB	n/a
	Previous 274f489	0 B	0 B	0 B	n/a	2.56 kB	+2.56 kB	n/a
netRx	This PR 17c3132	0 B	0 B	0 B	n/a	41 B	+41 B	n/a
	Previous 274f489	0 B	0 B	0 B	n/a	41 B	+41 B	n/a
netCount	This PR 17c3132	0	0	0	n/a	1	+1	n/a
	Previous 274f489	0	0	0	n/a	1	+1	n/a
netTime	This PR 17c3132	0.00 ms	0.00 ms	0.00 ms	n/a	103.38 ms	+103.38 ms	n/a
	Previous 274f489	0.00 ms	0.00 ms	0.00 ms	n/a	116.60 ms	+116.60 ms	n/a

Previous results on branch: develop

Revision	LCP	CLS	CPU	JS heap avg	JS heap max	netTx	netRx	netCount	netTime
274f489	+63.60 ms	-0.00 ms	+11.56 pp	+1.08 MB	+2.2 MB	+2.56 kB	+41 B	+1	+116.60 ms
4827b60	+58.67 ms	+0.00 ms	+18.38 pp	+1.07 MB	+2.22 MB	+2.6 kB	+41 B	+1	+91.21 ms
c3806eb	+79.85 ms	-0.00 ms	+12.10 pp	+1.05 MB	+2.16 MB	+2.54 kB	+41 B	+1	+93.58 ms
b49d9f7	+52.79 ms	-0.00 ms	+15.46 pp	+1.07 MB	+2.21 MB	+2.59 kB	+41 B	+1	+70.48 ms
7e57cb7	+47.89 ms	+0.00 ms	+10.59 pp	+1.09 MB	+2.21 MB	+2.59 kB	+41 B	+1	+72.93 ms
538c3a6	+63.63 ms	+0.00 ms	+14.14 pp	+1.07 MB	+2.16 MB	+2.6 kB	+41 B	+1	+112.08 ms
fc7b716	+52.44 ms	+0.00 ms	+14.74 pp	+1.09 MB	+2.21 MB	+2.68 kB	+41 B	+1	+89.64 ms

---

*) pp - percentage points - an absolute difference between two percentages.
Last updated: Fri, 10 Feb 2023 14:56:47 GMT

[Lms24]

Ah that makes way more sense :D not sure why I wrote it this way back then