> Supported boards moved to new folder
> Titles updated as per review for code and tools downloading
> References and link issue fixed

repo defaults to checking out the "master" branch, but manifest.git doesn't have one - it uses a "develop" branch instead.

Signed-off-by: Bernhard Rosenkränzer <bernhard.rosenkraenzer.ext@huawei.com>

Update documentation/source/quick-start/images/.gitkeep, documentation/source/quick-start/images/architecture.png, documentation/source/quick-start/.gitkeep, documentation/source/quick-start/Readme-EN.rst, documentation/source/quick-start/build-open-harmony.rst files

Update docs/source/overview/figures/.gitkeep, docs/source/overview/figures/architecture.png, docs/source/overview/figures/data_management.png, docs/source/overview/figures/device_virtual.png, docs/source/overview/figures/muti-device.png, docs/source/overview/figures/system_security.jpg, docs/source/overview/figures/task_scheduling.png, docs/source/overview/figures/virtual_bus.png, docs/source/overview/.gitkeep, docs/source/overview/Readme-EN.rst, docs/source/overview/about-harmonyOS.rst, docs/source/overview/system-security.rst, docs/source/overview/technical-features.rst, docs/source/quickstart/images/architecture.png, docs/source/quickstart/.gitkeep, docs/source/quickstart/Readme-EN.rst, docs/source/quickstart/build-open-harmony.rst, docs/source/readme/Images/.gitkeep, docs/source/readme/Images/Font_style.PNG, docs/source/readme/Images/List-table.PNG, docs/source/readme/Images/List.PNG, docs/source/readme/Images/csv_table.PNG, docs/source/readme/Images/math.PNG, docs/source/readme/Images/multi-column_list.PNG, docs/source/readme/Images/multi_data.PNG, docs/source/readme/Images/tables.PNG, docs/source/readme/Images/tables22.png, docs/source/readme/Images/toctree.PNG, docs/source/readme/.gitkeep, docs/source/readme/C Coding Style Guide.rst files