fix: 同步文档及demo

fix: graphmarker

docs: update fontFamily type in docs.

docs: update CHANGELOG

Update getting-started.en.md

docs: update create edge demo with linkCenter

test: update image-minimap-spec.

fix: delete unused var

fix: handleMenuClick trigger multiple times

1. handleMenuClick listerner not removed on menu hide

docs: add docs for getNeighbors