fix: ux: update lotus-wallet run description

[rjan90]

Proposed Changes

Update the lotus-wallet run description to include that a FULLNODE_API_INFO env variable needs to be set before running. Should address 5. in #8459

Checklist

Before you mark the PR ready for review, please make sure that:

• All commits have a clear commit message.
• The PR title is in the form of of <PR type>: <area>: <change being made>
  • example: fix: mempool: Introduce a cache for valid signatures
  • PR type: fix, feat, INTERFACE BREAKING CHANGE, CONSENSUS BREAKING, build, chore, ci, docs,perf, refactor, revert, style, test
  • area: api, chain, state, vm, data transfer, market, mempool, message, block production, multisig, networking, paychan, proving, sealing, wallet, deps
• This PR has tests for new functionality or change in behaviour
• If new user-facing features are introduced, clear usage guidelines and / or documentation updates should be included in https://lotus.filecoin.io or Discussion Tutorials.
• CI is green

[codecov]

Codecov Report

Merging #8528 (825cdb8) into master (caeeb6a) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #8528      +/-   ##
==========================================
- Coverage   40.26%   40.23%   -0.03%     
==========================================
  Files         683      683              
  Lines       74480    74480              
==========================================
- Hits        29989    29969      -20     
- Misses      39263    39275      +12     
- Partials     5228     5236       +8     

Impacted Files	Coverage Δ
cmd/lotus-wallet/main.go	0.00% <ø> (ø)
chain/events/observer.go	71.64% <0.00%> (-6.72%)	⬇️
extern/storage-sealing/currentdealinfo.go	71.17% <0.00%> (-5.41%)	⬇️
chain/types/tipset_key.go	85.96% <0.00%> (-3.51%)	⬇️
chain/exchange/client.go	52.96% <0.00%> (-1.70%)	⬇️
chain/events/events_called.go	83.90% <0.00%> (-1.47%)	⬇️
chain/stmgr/searchwait.go	67.30% <0.00%> (-1.29%)	⬇️
blockstore/autobatch.go	56.30% <0.00%> (-0.85%)	⬇️
chain/sync.go	70.52% <0.00%> (-0.69%)	⬇️
extern/storage-sealing/fsm.go	60.73% <0.00%> (-0.68%)	⬇️
... and 13 more

[arajasek]

BTW, you shouldn't need to fork the repo -- you should have write access as a member of the @filecoin-project/lotus-tse team.