Docs cleanup

[scorbajio]

Small fixes in DEVELOPER.md file, and adding verkle and binarytree to relationship diagram in client README.md, as noted in #3946 .

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.63%. Comparing base (f2b8a17) to head (634d5e4).
Report is 1 commits behind head on master.

Additional details and impacted files

Flag	Coverage Δ
block	83.29% <ø> (ø)
blockchain	89.33% <ø> (ø)
client	68.09% <ø> (ø)
common	98.49% <ø> (ø)
devp2p	86.73% <ø> (ø)
evm	72.98% <ø> (ø)
genesis	99.98% <ø> (ø)
mpt	89.71% <ø> (-0.06%)	⬇️
rlp	91.43% <ø> (ø)
statemanager	69.16% <ø> (ø)
tx	90.58% <ø> (ø)
util	81.96% <ø> (ø)
vm	57.20% <ø> (ø)
wallet	88.55% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[acolytec3]

Great cleanup!