Do not use dart:hml in the readme to make compatible for WASM

Name		Name	Last commit message	Last commit date
Latest commit History 147 Commits
.github/workflows		.github/workflows
.idea		.idea
assets		assets
example		example
lib		lib
test/src/models		test/src/models
.gitignore		.gitignore
.metadata		.metadata
CHANGELOG.md		CHANGELOG.md
LICENSE		LICENSE
README.md		README.md
analysis_options.yaml		analysis_options.yaml
image_picker_web.iml		image_picker_web.iml
pubspec.yaml		pubspec.yaml

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