docs: add "Bring your data" step to homepage journey - #29

Running Vale across on the following files affected by this PR:

- overview/tracebloc.mdx

Attempting to initialize Vale linter...
No customer vale configuration detected. Using Mintlify's default configuration.
Attempting to run Vale spellcheck...
Vale spellcheck completed successfully.

overview/tracebloc.mdx:
	- 2:9       Did you really mean 'tracebloc'?
	- 11:1      Did you really mean 'tracebloc'?
	- 23:40     Did you really mean 'else's'?
	- 29:12     Did you really mean 'tracebloc'?
	- 31:1      Did you really mean 'tracebloc'?
	- 33:123    Did you really mean 'NDAs'?
	- 40:38     Did you really mean 'leaderboard'?
	- 40:70     Did you really mean 'benchmarked'?
	- 76:22     Did you really mean 'benchmarked'?
	- 76:66     Did you really mean 'leaderboard'?
	- 82:24     Did you really mean 'tracebloc'?
	- 86:78     Did you really mean 'leaderboard'?
	- 116:39    Did you really mean 'tracebloc'?


Found 13 suggested changes across 1 files in 453.86ms