Update 'Home'

Home.md

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+#Metadata
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+All changes to any of the doc data is generated from metadata in this repository with the help of scripts:
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+`otc_metadata/data/services.yaml` file contains all services, and docs and services sorted alphabetically
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+- `python tools/generate_docexports_data.py > ../../docs/doc-exports/metadata.yaml` is used to generate new metadata.yaml file in the doc-exports repository
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+- `tools/bootstrap_repositories.py ...` is used to create new doc repository
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+- `tools/generate_doc_confpy.py` - creating PRs to update conf.py file for all docs
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+- `tools/generate_doc_gitcontrol_repos.py <path_to_gincontrol>/data/gitXXX/orgs/xxx/` - generate (update) gitcontrol
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+- `tools/open_doc_issue.py` - open gitea issues for every document
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+- `tools/sync_doc_repo.py` - open PRs to synchronize content (overwrite) between environments.
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